Last updated on: 6/19/2017 10:08:11 AM PST

Is Human Activity Primarily Responsible for Global Climate Change?

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PRO (yes) Comments (100)

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  • +33 +67 -34 Alyssa Anderson May. 13, 2015
    "It is obvious that global temperatures have been on the rise. It is due to the large amounts of CO2 released by humans and has caused drastic climate change. There have been increasing number and severity of droughts, hurricanes, and heat waves all around the world. Many claim that it is due to nature and humans don't release enough CO2 to cause this. They say that it is following a pattern of cooling then warming and we are currently in a warming period. What these people fail to realize is that the temperatures have been rising at a rate that hasn't been seen for 11,300 years. This is too much to blame on nature. Also, this is the first time CO2 levels have reached over 300 ppm. People are not taking responsibility for what the human population has caused. Even if there is no proven science of the things increased CO2 levels have caused, there's still a direct connection between humans and global warming. If people deny that we are a factor of global warming, the can still try to decrease their CO2 emissions as it will benefit our atmosphere in a few ways. Overall, humans are a main factor of global warming, and we should be doing our part in reversing this to sustain the habitability of our Earth for as long as possible."
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    • 0 0 0 kaley Nov. 29, 2017
      "good job"
    • 0 0 0 Alyssa Anderson Jan. 20, 2016
      "Yes. You are very right plants need CO2 for photosynthesis. But they don't need people in order to get this CO2. There was CO2 here before us, and there will be after us. One reason there is increased CO2 is that we cut down trees and plants that produce CO2 and expand it into human land where we produce more CO2. Trees have more than enough CO2. We can't keep cutting down trees that produce our oxygen, because there wouldn't be oxygen in the atmosphere without them. We are dependent on them, they are not dependent on us. Do you see the levels of CO2 running out? We have higher levels than ever. This means we don't even have enough trees to use up all of the CO2. Also, you may be forgetting that plants can also use cellular respiration, which is what they do in the dark when there's no light to break apart the water molecules. Running out of CO2 is not what we need to be worried about."
    • -3 +1 -4 myawesomeself Jan. 17, 2016
      "Don't plants need CO2 for photosynthesis? So is and abundance of CO2 with the side effect of two degrees (which, I don't know about nature, but I can sure handle) really a bad thing? Do we really want to begin to deprive plants of their "oxygen?""
  • +9 +76 -67 Garrett Oden Oct. 31, 2013
    "I am a pro because the earth is changing. The weather patterns are changing. Hurricane season is coming earlier and ending later. Snow is falling in August in the North of the united states, when it should be falling around november. I think that everything should be different. I think we should find a better vehicle that does not put the amount of carbon dioxide in the air. The carbon messes up the protective layer of the stratosphere, and it gets a lot worse. I also think that the amount of production factories put into the air that is harmful will affect to everyone is really, really bad. Sooner it will change from a dark, stormy night. To a dark, stormy DAY.
    I have done lots of research on this topic and I this I will influence alot of people."
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    • -5 +2 -7 Liam May. 3, 2014
      "A dark, stormy day? What?"
  • +7 +22 -15 Brandon N May. 13, 2015
    "Humans are a large reason why the levels of carbon dioxide is rising as well as the core temperature of the world. Burning fossil fuels increase the C02 and with the carbon dioxide getting trapped in the earth's atmosphere witch makes it more thick and it acts like a blanket. The sun's radiation that comes through and normally a large portion would bounce back into the outer space however C02, methane, nitrous oxide, trap more and more of the suns radiation and that as well causes the earth,s temperature to rise. With the increase of greenhouse gasses and the temperature, the ice caps have decreased by 13.5% per decade. 86% scientist believe that humans are the reason for global climate change is a rapid rate. In the past 650,000 carbon dioxide did not rise past 330ppm, in 2013 it rose to 400ppm and expected to rise to 450ppm by the year 2040. There are ways to reduce the rate as for the temperature but it is up to us to make the difference."
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  • +6 +24 -18 Warm Climate Aug. 5, 2015
    "Is it hot in here or is it just me?"
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  • +6 +27 -21 Richard Jackson Jun. 6, 2015
    "Without human activity the earth would currently be cooling as we are at a very low solar radiation and sun spot activity."
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  • +5 +17 -12 Jaiden Oct. 28, 2015
    "I agree on this subject because the main cause of global warming is green house effects."
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  • +4 +18 -14 Kaylee Jan. 15, 2016
    "I personally feel like climate change is caused by humans. I do understand that we need to survive to but if we keep harming the earth we may all die from climate change or even pollution"
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  • +4 +23 -19 claudia jones Apr. 7, 2015
    "No we are the cause of a lot of things like dumping trash in the oceans but we cannot change the climate. If we can make a rain cloud make rain then we are in control of the climate but until we can do that we are not the cause.I feel this is all contrived for certain people to make billions of dollars on our fears. We as humans have to start cleaning up the poisons and trash and leave mother nature to the changes that occur naturally. ."
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  • +3 +4 -1 real logic Mar. 22, 2018
    "obviously there is climate change, there is too much undeniable evidence. it directly says 98 percent of studies suggest that, if you think that all of the scientists that do those studies get paid by the government? that sounds like a conspiracy theory. thats tens of thousands of scientists, its fake news.

    don't tell me that all of the cars, factories and machines don't have an impact on earth, look at china! they have to wear masks at points. all of that co2 is trapping sunlight in the earth, warming it up. within 200 years it has gone up almost 2 degrees Celsius, but now that technology and cars and population is at its max its going to speed up a lot faster.

    wether the deniers like it or not, its happening. no matter how many out you say humans have nothing to do with it, do me a favor and actually find some of that 2% of evidence I would really like to see it. Its just a bummer its fake news"
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  • +2 +33 -31 Stonehenge Apr. 16, 2015
    "should have listened to Al Gore. But no...... lets vote for Bush and mess up the country. lol"
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  • +2 +17 -15 Sergio May. 6, 2014
    "What point do we finally say that we are polluting the Earth too much? We need to stop Greenhouse gas emissions before it is too late for our ignorance to be changed."
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  • +1 +1 0 Ayden Sep. 11, 2018
    "Do we cause global warming? No, absolutely not, but there is overwhelming evidence that despite that fact we speed up the process way beyond normal bounds. Either way, despite this argument, there is no question that there is an issue and we need to solve it and depend on mother nature to clean up our messes for us."
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  • +1 +2 -1 Jake May. 18, 2018
    "As a young and aspiring climate scientist for Science Olympiad I have done a lot of research on climate change and I found that the exes of CO2 in the atmosphere puts us into a feedback loop with the ice caps putting water vapor which is a greenhouse gas into the atmosphere therefore warming the earth, and we have seen a record amount of flooding and hurricanes ransacking the coast that is caused by the warming of the planet"
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  • +1 +2 -1 Brandon G. Apr. 27, 2018
    "Yes because the earth over the past few years have gotten colder in the winter and hotter in the summer. Some day the world may get too hot or cold and we with eventually have to move to another planet or we may die off."
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  • +1 +3 -2 carlos Jan. 26, 2018
    "Global warming is caused by gases from fossil fuels,greenhouse gases,and and cow farts so that is what global warming on earth and those gases will trap the suns heat and species of animals could go extinct."
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  • +1 +6 -5 Dee Nov. 7, 2017
    "This site's cons are a list of common denier myths that have ALL been debunked. Please remove the misinformation."
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  • +1 +19 -18 Andrew May. 6, 2014
    "Humans are affecting the climate. We are adding very large amounts of CO2 to the atmosphere, while cutting down trees that absorb it. There is a close correlation between the increase in temperature and the increase in production of CO2"
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  • +1 +22 -21 Justice Uribe May. 6, 2014
    "I think that humans do play a part in global climate change. The pollution that we cause and the gases that we emit into the atmosphere don't help in any way. Eventually the oceans and forests wont or cant be able to soak it all up. Sea levels are rising, ice caps are melting, gases are still being emited. This wont get any better throughout the years unless something is done."
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  • 0 0 0 fire the 3rd Nov. 27, 2018
    "I think yes. With the number of factories producing co2 and other greenhouse gases, it will build up quickly."
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  • 0 0 0 Gregory Jun. 4, 2018
    "Since man kind is constantly expanding, a fraction of the people are selfishly taking away the resources that Mother nature provides for us, and the lives of the animals that want to live in peace."
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  • 0 +1 -1 Rob I May. 27, 2018
    "No one can be CERTAIN that human activity is causing climate change. However the scientific community are saying that there is a strong likelihood (8/10 seems commonly quoted) that this is the case. That is good enough for me, as I could never find the time to research all the data and draw a scientific conclusion myself. I have seen many compelling graphs showing what appears to be conclusive evidence ofr both sides, but taken in isolation they never show the whole story, and there is always another perspective. Also I think labelling the sceptics "deniers" is emotive and unnecessary - there needs to be argument on both sides to ensure un-biased science. I don't doubt that there are those seeking to take advantage of the debate for personal gain (eg: providers of electric cars who want to sell more, or politicians who want to be seen to be protecting their voter's industries), and the scientific research is still evolving and not conclusive, but I am convinced enough to go with the large majority consensus."
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  • 0 +1 -1 5qyftr May. 21, 2018
    "If we want to put snow
    back on the mountains,
    We have to re-cover
    the deserts;
    Every drop of rain And
    every drop of water
    must become precious,
    alleviating frequent lowland
    flooding, creating water out
    on the desert, capturing rain-
    water all over Earth, the
    creation of one million
    cisterns around the planet,
    the greening of deserts
    where we can grow, smelting
    sand dunes into prefabricated,
    fireproof lumber or something,
    shading drylands, abandoned
    surface mines, covering any-
    where that the dirt is exposed,
    greening the center of North
    America could put snow on
    the Rockies and their shorter
    neighbors, the Chilean desert-
    snow on the Andes;
    As well as developing above-
    ground water wells, arrays
    of consoles designed to
    create and harness
    condensation by the
    gallons, the science of
    wind will be a priority
    in the future of our planet,
    tank farms, biodegradable
    subterranean reservoirs;

    lots of options, lots of discussion,
    lots of Humans, money, hope,
    no interference, no beak-wetting,

    history shows we ought not
    under estimate Humanity,
    Positive Human Energy,
    The Human Spirit."
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  • 0 +1 -1 Dr. PrimedXD Mar. 11, 2018
    ""Global surface temperature in 2016 was the warmest since official records began in 1880. It was the third year in a row to set a new heat record, and the fifth time the record has been broken since the start of the 21st century." -

    This shows that more human industries and other advantages have been harming climates, and the housing business takes away trees that usually regulate oxygen and air temperature. What that also does is El Nino levels increasing and the result is the devastating hurricane season of Sep. 2017."
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  • 0 +5 -5 Dylan Jul. 13, 2017
    "FOSSIL FUELS. Fossil fuels have been proven to be the cause of climate change and ocean acidity. I mention ocean acidity because it indirectly effects climate cane, which is solely the cause of humans."
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  • 0 +5 -5 none Jul. 8, 2017
    "the argument about the growing ice caps is false. THe climate of antarctica is isilated from the rest of the world due to strong currents and northward wind. The arctic, however, is melting."
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  • 0 +3 -3 Bella May. 8, 2017
    "OK, honestly i'm stuck in between a pro and a con, cos i believe that climate change is moved along faster by human, but we aren't the leading cause of it."
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  • 0 +7 -7 Beluga Feb. 16, 2017
    Humans have been around for a blip on the timeline. We have caused so much destruction however. We did not cause it but we are why its happening right now instead of thousands or millons of years from now. We are the reason its happening."
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  • 0 +8 -8 Paul W Dec. 7, 2016
    "Do I think human activity is primarily responsible for global climate change? Probably, but here's the thing, even if we assume that a temperature change in the environment isn't caused by human activity, pollution is still incredibly dangerous for human life.

    Have you seen images of Beijing smog? It's terrible. At times, it gets so polluted that its dangerous to even be outside. Not to mention, they also happen to have some of the highest level of carbon emissions in the world.

    So should we do something about our carbon emissions? If you like breathing clean air, yes."
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  • 0 +9 -9 Elijah H Apr. 21, 2016
    "only 1000 scientists, that is maybe 1 percent of all the scientists in the world."
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  • 0 +10 -10 Leala s Jan. 15, 2016
    "you know you the wonderful world we live in? well you are distoring it with all your gas and oil and new tech so soon there will be no earth because of global climate change cased by you.with all the fosil foules you are wasting and going in the air and making the earth to if you want to live on earth or want humans to live on earth STOP WASTING ENERGY!"
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  • 0 +16 -16 Katherine Nov. 20, 2015
    "The Earth has been around for 4.6 billion years. (Yes, 4.6 billion, not six thousand, but that's beside the point.) Imagine that scaled to 46 years.

    Of those four decades, we've been around for barely a blip of time. Our industrial revolution was a minute ago.

    In the space of 1 minute out of 46 years, we have destroyed over 50% of the world's forests."
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    • +1 +1 0 Seth S. Jan. 28, 2016
      "Not that I agree with your time frame, but why are you trying to scale 4.6 B years to 46 years anyway? They are in no way comparable. It's not 1 minute. It's thousands of years. At least try to directly relate it to the global warming issue."
    • -1 0 -1 Rachael May. 11, 2017
      "The earth is not a billion years. Yes it is about 6,ooo years. People only think that it is billion years because of our tecnology now a days"
  • 0 +11 -11 E. King Jun. 4, 2015
    "Why are nearly all the deniers of one ideological/political persuasion, and those who accept the premise of the other?"
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  • 0 +11 -11 james May. 13, 2015
    "yes i am pro to global warming. The reson being that it is happening right now we see it and feel it and we can chosse to ingore it but it is happening. Are weather is getting worse winters are getting colder and summers are getting hotter. And we do not take action to stop this global warming it is a fact not a thery it has been proven and we are trying to help the rest of the people that dont think it's real are just lazy or chosse not to except it and thats ok but when are world falls apart more then it has and they wonder what has happend it will becuse they didn't help. The earth is are home we need to take care of it as it has taken care of us we only have one earth in one solar system thats it if we screw it up thier is no plan B. It is up to us to change are ways and do the right thing and stop draging are butts and just to wait and seee what happens make a change be the change."
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  • 0 +22 -22 Jes Feb. 1, 2015
    "Climate change can cause heat waves which can cause heat strokes and dehydration. A lot of deaths have happened from climate change."
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  • 0 +10 -10 Scott Braspenninx Nov. 29, 2014
    "I was an environmental engineer for industry for 20, but now disabled. I managed compliance, pollution prevention, sustainability, product safety, and legacy issues for one of the world's largest leather manufacturing companies. I'm educated in chemical engineering. I've also designed biological and chemical wastewater treatment systems. While not a climate scientist, I have long studied the science, development and implementation of environmental legislation and other controls worldwide. While this isn't necessarily a pro-comment, it concerns application of the precautionary principle to manmade climate change. One thing is consistent on both sides of this issue, a great deal of uncertainty exists. We cannot gamble with the future of life on Earth by making assumptions. The maximum potential danger of taking precautions and being wrong as far less compared to not taking precautions and being wrong. Money is not the most important thing to life on Earth. But I believe money is the main obstacle to everybody agreeing to take precautions. If precautions are taken and climate change doesn't occur, the fight will continue unless/until the science improves."
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    • +1 +1 0 Jeff Green Apr. 10, 2015
      "the above is based in all peer reviewed science. The evidence is actually overwhelming that humans have overwhelmed the natural course of earth. The earth should actually be heading into another ice age and yet we are warming the earth with a slightly cooling sun. It doesn't get any clearer than that."
  • -1 0 -1 youjiro Sep. 1, 2018
    "Global climate change is most important problem .
    We should responsible for global climate change .We should regulate CO2 emissions.recently car company developed electric car this is good way to reduce CO2 emissions .Global warning is serious levels right now .
    But all of people do not care about this ."
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  • -1 +10 -11 Fact Jan. 21, 2016
    "The Cincinnati Childhood Allergy and Air Pollution Study says that not only are we heating the world up with greenhouse gasses, but large intakes of methane can lead to ADHD for children at the age of seven and lower."
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  • -1 +14 -15 Luke May. 14, 2015
    "Humans are, in my opinion the largest contributing factor to the rise in CO2 in our atmosphere. We have so many coal burning power plants and cars that create so many harmful gases that go into our atmosphere. The polar ice caps are decreasing 13.5% per decade and the parts per million have increased from 330ppm to 400ppm now. The temp. increasing at the rate it is now will be off the charts in a couple of years."
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  • -1 +14 -15 Reagan May. 13, 2015
    "I believe that there is undeniable evidence that we are making an impact that could take millenniums to go back to normal, and we should really limit and think about the impact we are making on the earth. Our polar ice caps and ocean levels and temperatures are rising at a rate higher than we have seen before. And our cars producing C02 have increase Co2 in our atmosphere which its undeniable that when we have more CO2 the temperature goes up."
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  • -1 +13 -14 tiffany May. 13, 2015
    "I'm pro because of the burning of fossil fuels and greenhouses are melting our planet, these gases (carbon dioxide, methane, and nitrous oxide.) are trapping heat making the world warmer aka greenhouses."
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  • -1 +16 -17 Carter roloff Apr. 29, 2015
    "I'm a pro because we made so many cars and burning fossil fuels and all that I hate that Obama needs to do some thing"
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    • 0 +1 -1 Carter roloff May. 1, 2015
      "We need to start making car that can run on solar power we have so much of it"
  • -1 +15 -16 Shannaya Apr. 22, 2015
    "Yes i am in the side of PRO as these matter needs to be sorted out as fast as possible the scientists needs to work hard on this matter.................. We don't even know what to do with our planet and what are we doing..."
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  • -1 +20 -21 John Varner Apr. 12, 2015
    "The "No" comments include bits by luminaries like James "I am not a scientist" Inhoffe, whose primary qualification for speaking on the issue is his being a senator with a demonstrable and admitted lack of scientific expertise, and Willie SOON, who has been on the payroll ($1M and counting) of various climate change denial corporations and groups. ProCon is not doing their job vetting sources or even reporting on the backgrounds of the "experts" they cite. ProCon has managed to muddy the waters and sully its reputation with this FOX-esque "fair and balanced" approach to this vitally important issue. SHAME!"
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  • -1 +17 -18 Robert Burns Apr. 2, 2015
    "global warming is all because of us humans. If we didn't start building factories and such. Yes there would still be some global warming but not as much because we put so much co2 in the air that it thickens the Atmosphere and traps in more heat which makes the glaciers melt. personally I would rather go back to living like cave men than live in the world we live in now and the "leaders" of the world are not doing anything about it they say they will but look they say oh no we are not the reason but we are we are the reason for global warming if you read this all the way I hope I changed your mind or I hope you already agreed thank you"
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  • -1 +17 -18 NateTHS Feb. 27, 2015
    "According to statistics natural resources will run out and the last drops will cause a world war involving nuclear war heads and a nuclear holocaust involving millions of civilians"
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  • -1 +23 -24 lolita vigil Feb. 4, 2015
    "with all do respect, this serious matter of global warming should be stopped immediately. most of us don't know what we're doing when we drive our car to work or flying in a plane. but when we do this, we are hurting the environment and everything in it. if we don't take a stand, our planet will NEVER be the same."
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  • -2 0 -2 Richard Greene Jul. 31, 2018
    "The word "unprecedented" is used frequently,
    but the word makes no sense, because 99.9999%
    of earth's climate history has no real time temperature measurements -- They have existed for only
    150 years out of the past 4.5 billion years! So we have no idea what a "normal" temperature is, or whether anything is unprecedented!"
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  • -2 +3 -5 Orlando F. Jun. 8, 2017
    "hi i'm Orlando i think that this is us killing ourselves with 7 billion people emitting all the gasses like CO2 H2O we are making our own oven"
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  • -2 +5 -7 sara Apr. 26, 2017
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  • -2 +6 -8 Sam Hibshman Mar. 22, 2017
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  • -2 +6 -8 christopher alden Sep. 16, 2016
    "I think that global warming is real and humans are causing it and we need to stop it before it is to late"
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  • -2 +8 -10 benny May. 4, 2016
    "well to start off fossil fuels really mess up the world.Although we need cars to travel we should stop using them"
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  • -2 +8 -10 smooth Apr. 29, 2016
    "Humans are causing climate change because the population is rising which is causing more pollution which is heating up our world which is causing CO2 to rise steadily."
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  • -2 +10 -12 someone Apr. 28, 2016
    "Burnring fosil fuels produces carbon dioxide"
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  • -2 +18 -20 Sandra K. Mar. 8, 2016
    "All the people that are supporting the con side are saying it was way worse India the past like 6times more pollutants in the air. Well now for the current situation we, humans are responsible for it. So you pretty much say there is 0% pollutants or green house gases in the air. If that's what you think support cons but no way I am supporting the cons."
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  • -2 +12 -14 Richard A. Evans May. 7, 2015
    "Both the National Academy of Sciences of the U.S. and the Royal Society of the U.K. have completed extensive studies of this question. Both conclude that human activities are responsible for most of the increased CO2 and global warming of the past 50-100 years. It's foolish and dangerous to ignore or contradict the conclusions of both these pre-eminent scientific societies."
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  • -2 +9 -11 matt May. 6, 2014
    "yes, it is obvious that human activity causes CO2 levels to rise, causing global climate change."
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  • -3 +6 -9 mike May. 15, 2016
    "Al gore and Obama are both democrats. al gore believes the humans are the primary reason for climate change. then obama believes in climate change as well because al gore is a scientist."
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  • -3 +5 -8 Chad Baker May. 5, 2016
    "While there may be no "real" proof of global warming is caused by humans fossil fuels are still not something we should rely on as they take long periods of time to form. We will eventually run out and lose the race against time. We are not prepared for a world without fossil fuels"
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  • -3 +7 -10 ibraheem May. 5, 2016
    "this pollution is leading to global warming as factories as well and that is leading to the disaster of the world"
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  • -3 +8 -11 james Apr. 13, 2016
    "climate change is for real because f*** the free world"
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  • -3 +11 -14 Jade Knight Dec. 8, 2015
    "The earth has been in and out of ice ages and periods of warming without human carbon dioxide output, but it's not that it was more or less warmer in the past, it's the speed and the rate that is changing. Green house gasses such as vapor, carbon dioxide, and methane absorb energy, slowing or preventing the loss of heat to space. Greenhouse gases act just like a blanket, warming the earth, causing the "greenhouse effect". Since 1750, when the industrial revolution began, many greenhouse gasses have been emitted into the atmosphere, causing the temperature of the earth to rise. We know that the concentrations of greenhouse gases since the industrial revolution are higher than they've been for hundreds of thousands of years because of tiny bubbles that are trapped in the polar ice sheets are actually pieces of the Earth's atmosphere in the past, frozen in time.
    There are particles that ensure that part of the reflected radiation from the sun gets back to earth. These particles are needed, and without them and our green house gasses, the average temperature of our earth would be -18 degrees Celsius, and not the average 15 degrees Celsius we have today."
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  • -3 +14 -17 lolita vigil Feb. 4, 2015
    "of cores we're part of the problem. to much pollution in the air because of cars, trucks, and other vehicles. so what can we do to stop it?"
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  • -3 +7 -10 Reid May. 29, 2014
    "I feel global warming is going to be the most difficult issue for current generations. As we can see, gaining consensus will be very difficult because acknowledging global warming would require changes to how we live. Many people don't want to change. I hope changes can be made, but I fear we are not doing enough quick enough to reduce humans CO2 output."
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  • -3 +7 -10 Anisia May. 7, 2014
    "Global warming is a major issue today, everything around us is changing. CO2 caused ocean and sea levels to rise and also cause the oceans to become more acidic. Climates around the world have been effected, places may get extreme weather changes. Greenhouse gases heat the earth, but lately the levels of CO2 and other gases are rising. All of this has been caused by human activity and it needs to be changed."
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  • -3 +13 -16 Cortes May. 5, 2014
    "Yes, we are destroying nature so nature is unable to absorb the co2."
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  • -4 +5 -9 Doug Feb. 10, 2016
    "I totally agree"
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  • -4 +7 -11 SIMON NJOROGE MWAURA Aug. 7, 2014
    "The global warming and climate change can be managed and controlled by global citizens"
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  • -4 +6 -10 wesley Jun. 2, 2014
    "humans are a big contributing factor in global warming"
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  • -4 +10 -14 Andrew E. Farrar May. 21, 2014
    "According to NASA 97% (references below) of Scientist who study climate agree that Climate Change is Human caused. This site makes it feel like a 50/50 deal.

    W. R. L. Anderegg, "Expert Credibility in Climate Change," Proceedings of the National Academy of Sciences Vol. 107 No. 27, 12107-12109 (21 June 2010); DOI: 10.1073/pnas.1003187107.

    P. T. Doran & M. K. Zimmerman, "Examining the Scientific Consensus on Climate Change," Eos Transactions American Geophysical Union Vol. 90 Issue 3 (2009), 22; DOI: 10.1029/2009EO030002.

    N. Oreskes, "Beyond the Ivory Tower: The Scientific Consensus on Climate Change," Science Vol. 306 no. 5702, p. 1686 (3 December 2004); DOI: 10.1126/science.1103618."
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  • -4 +6 -10 Abby May. 7, 2014
    "I am pro when it comes to this situation because us humans are at fault for it. We are the creators for many things that harm this world and yet, we still try to make bigger and better things which will result in it getting worse. Almost all climate change studies show humans being the main cause."
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  • -4 +6 -10 Leslie May. 7, 2014
    "Yes I believe that humans are the cause of global warming. About 75% of the 20th century is increased in gas of CO2 caused by us humans burning fossil fuel. Greenhouse gas heat up the planet and also effects climate models. Rainfalls are increased due to increased evaporation from global warming. Also the air that factories take out is doing harm as well It darkens the days and it will soon look like a dark stormy day. Global sea levels rose an average of 1.8mm per year between 1961 and 2003 due to human induced global warming. Us humans we manage everything here on earth. Our choices on environmental stuff effect the earth in a different way or form. Humans are the cause of climate change no doubt about that."
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  • -4 +6 -10 Abby May. 7, 2014
    "I do believe that human activity is a substantial cause of global climate change. i believe this because humans are and still will continue to produce green house gases that cause climate change. Also from 1961 to 2003 there has been an 8 inch rise in ocean levels because of global climate change. Finally, most reports and studies about global climate change state that it is mostly because of humans."
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  • -4 +7 -11 stevie May. 6, 2014
    "I am a pro. I feel like as they years go by more humans use fossil fuels every single day. and fossil fuels like carbon dioxide can kill plants. And if all plants die all humans die. There for, we are killing ourselves"
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  • -4 +7 -11 Summer May. 6, 2014
    "I am a pro, because I feel like humans are doing too much activity that deals with burning Fossil Fuels. The more fossil fuel is burned, to more CO2 that would go in to the air. Making the green house gas increase, and the temperature increase. It has gotten to the point that every one is in danger. This is why we need to stop most of the electricity objects, and stop cutting down trees. Even a little would help change the world.."
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  • -4 +7 -11 Raekwon Dupree May. 6, 2014
    "I think human activity is a substantial cause of global climate change because there air pollution that's changing the climate in the world. Also there's water pollution that changes the water climate and hurts the living organisms that live in that water."
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  • -4 +7 -11 Jada May. 5, 2014
    "I think yes because gas exhaust goes into the atmosphere and as the population increases the more cars and buses are being used everyday."
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  • -4 +7 -11 Peter Bollwerk May. 1, 2014
    "When it comes to science, what matters most is the scientific consensus of the experts who are actually doing the research and publishing papers.
    As I understand it, there is overwhelming consensus among this specific group. Most of the disagreement comes from people outside of this group. That should tell you something."
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    • 0 0 0 Liam May. 2, 2014
      "Yes! The consensus among individuals generally more educated than most of us is telling us that climate change is
      1) real
      2) our fault
      3) really bad"
  • -4 +8 -12 Holly Feb. 20, 2014
    "I think that global warming is caused by humans. These days with all the greenhouse gasses and CO2 emissions makes this world warmer and this world is getting warmer quick."
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  • -4 +12 -16 patrick acero Jan. 23, 2014
    "i "There's no debate among climate scientists on this subject. The evidence is overwhelming: melting glaciers, record high temperatures, more extreme weather, etc.."
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  • -4 +20 -24 Alan Greenhalgh Oct. 15, 2013
    "Global land and marine surface temperature records maintained since 1860 prove that surface temperatures have risen consistently every year since 1980. Apart from 1997 and 1998, each year has been hotter than the previous year, and the current year is the hottest yet. NASA'S GISS direct surface temperature analysis show similar heating trends. Satellite data compiled over the past four decades records significant warming of the troposphere. That data also records a corresponding cooling of the stratosphere. These changes are evidence of increased atmospheric concentrations of greenhouse gases which any schoolboy can tell you are the causes of global warming.

    In addition, records from sixty-three radio sonde stations show consistent atmospheric warming trends since 1958. Add to that borehole analysis, glacial melt observations, sea ice melt, sea level rise, proxy reconstructions and permafrost melt and you have incontrovertible proof of accelerating climate change.

    However, none of us really need look at statistics, scientific evidence and graphs to know the Earth is heating up. We have all felt it. Each summer there are more disastrous bush-fires, horrendous storms, longer droughts and catastrophic floods."
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    • -2 +1 -3 TapDog's Dad Mar. 15, 2014
      "Alan, you are looking at an infinitesimal window of time in the earth's history. Consider the climate changes that occurred between ice ages. Obviously, these were much more dramatic than the changes your correctly quote. Humans were not a factor then, and are not a factor now."
  • -5 +7 -12 Cole Sanders May. 6, 2014
    "yes, because humans have put so much CO2 in the atmosphere and nothing can clean it up . And it keeps getting worse and worse."
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  • -5 +8 -13 Sienna May. 6, 2014
    "97% of climate scientists agree that climate warming trends over the past century are likely due to human activities, and so do I. The things we do every day and maybe not even think about have an impact on the earth because it is warming the earth from car exhaust, factories, ect."
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  • -5 +9 -14 rhauge45 Apr. 30, 2014
    "1) If Human Activity is not the source of the currently increasing amount of greenhouse gases, then what is? Name it.

    2) The "con" sources listed on this website are either not scientific sources (Heritage Foundation) or they would have a bias against climate change (American Association of Petroleum Geologists definitely would be biased against the idea that fossil fuel burning is the source). There are no scientifically reliable sources of information against climate change. The comparisons cannot be parallel because they are not from respectable scientific sources."
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  • -5 +7 -12 Darrian Apr. 30, 2014
    "Humans are the cause of global warming, but it isn't really people like you and me fault. Politicians and the government have hidden agendas and plans so they save money but at the cost of the planet. Global warming is getting worse, and us constantly burning fossil fuels isn't helping. The evidence is against us. Ever since the industrial revolution when fossil fuels were first being depended on, there has been a steady rise in temperatures every century. Not to mention the impact it is having on natural disasters like tsunamis, hurricanes, or droughts. Global warming only increases the more we burn fossil fuels, it destroys our ozone letting in the suns rays which in turn increases global warming more. Its a nasty cycle that we need to break"
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  • -5 +8 -13 Cole Apr. 24, 2014
    "97% of climate scientists agree that climate-warming trends over the past century are very likely due to human activities."
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  • -5 +8 -13 ariella Apr. 23, 2014
    "no we cod not cut the trees down they help this earth it like giving all are air to space and wold you like that no so you wold not cut down the trees that's such a mean thing to do not just for us but for the trees what if they where to speak then they wold say don't cut us down we are helping you what if it had felling what if they can walk ya not so nice is it so don't cut them down well they are still here but when they can do all those things we wont cut it down right i now i am right because now they have the power not you
    so stop hating the EARTH your better then that"
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  • -5 +8 -13 Allison Apr. 20, 2014
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    • +2 +2 0 anonymous May. 3, 2014
      "Compelling argument."
  • -5 +6 -11 Gabe Kurschner Apr. 7, 2014
    "yes because of the greenhouse gas affect we are changing the world ad how it works with cars and all motorized vehicles"
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  • -5 +7 -12 anonymous Apr. 7, 2014
    "Listen i can easily see both sides of the argument. I understand that there are a lot of natural contributors to global climate change and even without humans we would one day come to a time of severe climate change, though, humans put out waste everyday. Our species contributes to somewhere around 6 billion metric tons of carbon a year. People say again and again they have looked at the data and its only increased a minute 1.789574 or whatever degrees. But remember this, Just one degree can tip the balance from freezing temperatures to melting temperatures. Just one degree added to 0 degrees C can lead to the eventual melting of the ice caps which would in turn lead to sea levels rising and the eventual flooding of the entire earth. Im not saying we are they main contributers, but, please to all those people who disagree research and learn about this subject before you make a decision."
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  • -5 +11 -16 Brain Tree Mar. 19, 2014
    "You seem to be intellectually dishonest - - not posting alternate views!

    Typical liberals that don't want truth."
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  • -5 +16 -21 Cole Tiemann Nov. 26, 2013
    "Carbon dioxide levels are rising at an even higher rate than ever. From 1963-2003, The water levels in the ocean have risen 8 inches. By 2100 all coastal cities will be underwater. Everyone knows the story of how the Polar Bears are disappearing. The ice caps are melting. As the superior race on Earth, we have to do something. We still have time.....We have to use it before time runs out."
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    • +1 +2 -1 Mark K Nov. 11, 2014
      "Your "facts" need some refining. The sea levels have not risen 8 inches; typical annual sea level changes are measured in millimeters. The ice caps are actually expanding. Please make an attempt to actually use facts rather than something you heard."
    • -1 +1 -2 Tap Dog's Dad Mar. 15, 2014
      "The polar bears are NOT disappearing. That's just another example of "Junk Science.""
  • -5 +21 -26 Eric Gibson Nov. 7, 2013
    "Yes because we are polluting the air a lot each day even more from factories, car exhaust, and other sources. Which means we are creating more and more carbon dioxide every single day which is making the hole in the ozone making the Earth warmer. But also everyday we are cutting down trees and destroying the one thing that takes in like carbon dioxide and releases oxygen! But this is a crazy question to ask, of course we are affecting the climate changes and we need to realize what's happening with global warming and what will happen if we don't take care of it some how."
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  • -6 +6 -12 Liam May. 2, 2014
    "When a man named Jim Powell searched the Thomson Reuters Web of Science for articles containing the phrases "global warming" or "global climate change", he found 13950 peer-reviewed articles. A mere 24 of these reject climate change or human causation of it. Does it say something about the legitimacy of climate change denial research that it can scarcely be found from peer-reviewed sources?"
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  • -7 +10 -17 Makayla King Jan. 22, 2014
    "Im pro because all of the pollutants in the air come from the things that us humans use. For example, the chemicals that come out of our car go into the air and causes global warming. Also the way that people take care of the way they live or the way people take care of their things and were they dump things at causes global warming. For example, when people dump oil into a large body of water that causes a lot of problems with the water supply and all the chemicals that could have been in the oil. And that is my arguement."
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  • -7 +13 -20 kiera timber Jan. 10, 2014
    "i think that thanks to littering and human manufacturers the world's temperatures are rising causing more and more problems."
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    • +2 +2 0 katelyn w. Jan. 13, 2014
      "I wrote this a couple of days ago at school for a project, my real name is Katelyn though and my last name is not timber, after I did a little more research I have found that people in general do believe in global warming at least a little bit, it's the fact that they don't want to be stuck paying all the money for a new car that runs off of water, or other environmentally friendly things. with more than 7 billion people walking the earth and at least 5 and 1/2 billion people driving cars or littering or killing trees and plants, it's really easy to see that here in a little bit drastic measures will need to be taken to insure our safety and the future generations safety.

      Do I personally think that the world's going to end? No. but thanks to the human race we are killing earth...slowly. another thing to think about is that, because of our pollution, bees are dying. If the bees die away, scientist say we will live no longer than 5 years before the human race dies away with the bees. Without the bees we won't have pollinated flowers or trees to grow fruit and less air, bees are already endangered now. And don't even get me started on the polar bears."
  • -7 +15 -22 Andrew J Dec. 4, 2013
    "The evidence clearly shows that humans have a huge impact on the environment"
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  • -8 +20 -28 adam Jan. 8, 2014
    "its gone up becase dinosaurs didnt drive SUVs"
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  • -11 +19 -30 Chris Jan. 11, 2014
    "The con sides facts are seriously weak. The one fact that states most studies against human caused climate change are paid by oil companies basically sums it all up. The other studies are plain wrong so please stop basing your opinions off of nothing con people."
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  • -15 +12 -27 sabrina Jan. 24, 2014
    "I agree"
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  • +51 +228 -177 Locke Aug. 2, 2012
    "Humans are not the cause of global warming. We are simply speeding the process. Global warming is a natural process that happens over time. It isn't something that happens overnight either. Our generation is not the only contributer to the heating of our planet. Fossil fuels have been used for hundereds of years. As an alternitave to using human labor, we began to rely more and more on fossil fuel powered machines. Humanity is not the cause, we didn't start the global warming, we just pushed it along."
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    • +8 +14 -6 katelyn w. Jan. 13, 2014
      "I strongly believe that we are a key contributor to global warming but I also agree with you we have gone into several ice ages in the past and we will continue to go through them no matter what."
    • +5 +11 -6 Cole Sanders May. 6, 2014
      "Yes it might be a natural process, but you saying we are speeding it up, doesn't that mean we still are contributing to global warming and that human are still responsible for it ."
    • +3 +4 -1 Elijah Apr. 21, 2016
      "I think that it is that people doing most of it and that nature is doing just a little."
    • 0 +11 -11 Demothesis Mar. 25, 2014
      "If we supposedly are speeding the process, then how in the world did it start in the first place. It had to have been the way we humans are making it worse right now. Also, I'd change the name by copyright of Orson Scott Card, the writer of the Ender series."
    • -1 +5 -6 Jeff Green Apr. 10, 2015


      katelyn w.

      Jan. 13, 2014

      "I strongly believe that we are a key contributor to global warming but I also agree with you we have gone into several ice ages in the past and we will continue to go through them no matter what."


      There actually is science that shows if we pollute enough with ghg's, we will skip the next ice age. That is how much we have overwhelmed the natural processes on earth. It is one of the arguments for the Anthropocene age. In a sense we have left the Holocene due to our effect on the earths climate."
    • -1 +14 -15 rusty covey Aug. 27, 2012
      "I concur, we will have a premature ice age bought on by human ignorance. Scientist have pulled up from inside the earth to show the different stages it went through. We are due for an "Ice Age" or a super high heats. Lets say the earth is changing to become iced over in 10,000 years. Do we want people in the future talking about how poorly we read the earth changing. If, we go green too fast we could speed up the ice age and its here in a 1000 years."
    • -2 0 -2 Damyan Jun. 9, 2016
      "sooooo true. sooooo true."
  • +3 +7 -4 Richard Greene Jul. 31, 2018
    "The primary "con" point should be that there is almost no real science backing up predictions of the average temperature for the next 100 years. In fact we already have 30 years of model predictions that have been grossly inaccurate, strongly implying that "scientists" do not understand the physics of climate change. The right answer for climate predictions is "No one knows"."
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  • +3 +43 -40 Prefer not to share May. 7, 2015
    "Over the last 2-2.3 billion years, the Earth has experienced a cycle that most scientists label as the "snowball-hothouse" cycle, in which temperature fluctuations can vary from 10-30 degrees from normal temperatures. This change takes a rather long time to surface (several million years).

    To me, the question being asked is not correct. The real question should be: "Do humans contribute to global warming?" The answer to this is: yes, we do, although not enough to be spending billions of dollars on reforms. If we can find a way to reduce emissions for a very cheap price, we should, but not what we ARE doing.

    Over the course of a hothouse Earth evolution, methane, carbon dioxide, and other greenhouse gases are released into the atmosphere from melting ice. It simply is not our major fault."
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  • +2 +49 -47 docG Nov. 10, 2014
    "This debate has unfortunately become politicized to the point that objective, unbiased thinking is extremely rare. I happen to be a left-wing Democrat who's become a global warming skeptic, and I have a feeling I'm one of the few on either side of the fence who's free of ideological bias.

    I"ve been writing on global warming lately on my blog, Mole in the Ground - and I'm inviting any interested parties to come over, read the last 6 posts, and participate with your comments, pro or con:"
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    • 0 0 0 Jeff Green Apr. 10, 2015
      "The atmosphere only absorbs 2.5% of the global warming while the oceans absorb 93%. Would you care to change your position based on where the thermometer measures the warming on earth."
  • +2 +36 -34 Taylor May. 6, 2014
    "Yes i agree that humans are creating more gases with all that has improved; however overtime not matter what the earth will eventually heat up on its own. Nature will do its part in order to keep the CO2 gases out of the air. Scientist are giving us facts from their stand point trying to scare us. Yet, they do not look at and consider the other side."
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    • 0 +1 -1 Jeff Green Apr. 10, 2015
      "Scientists just aren't the dummies some people would like them to be. They are quite careful to work out the process of science in answering their questions they pose in their peer reviewed papers. There are tens of thousands of papers showing overwhelming support of AGW theory based in data. AGW is now fact."
    • -1 0 -1 Seth S. Jan. 28, 2016
      "Jeff Green, First, AGW is in no way "fact." Facts are undebatable, such as 1+1=2. You must have absolutely no idea how much evidence is against AGW, nearly as much as going for it, also peer reviewed. Just 1 exapmle: In order for AGW to hold true, The most warming would occur in the troposphere (because the GHGs are there), near the equator (where the earth receives the most energy from the sun). However, reports from satellites and weather balloons alike show very the exact opposite. (For exact data and charts, see )"
  • +2 +25 -23 Bronn May. 1, 2014
    "Global warming is the cause for Antarctica to melt, it also changes our life style."
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  • +2 +83 -81 Josh Feb. 3, 2014
    "Global warming is a real thing... just not for the reasons that you think. Humans do make an impact on the environment, but it is not as big as most people think. Global warming is just the sun going through it's natural heat cycles. Studies show that other planets are heating up as well. The sun has heated up and cooled down in the past, and will continue to do so."
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    • 0 0 0 myawesomeself Jan. 17, 2016
      "Although we are in a cooling cycle, it isn't necessarily a constant cooling. We may be heading toward an overall cooling, but there may be short phases of warming, creating a graph similar to a stock market graph, with ups and downs at random places, and the average global temperatures from the past follow a similar look on a graph, but not as crazy as the stock market might be. Those little ups and downs can be caused by many things: volcanos, humans, etc. and, if we still follow past trends, this global warming is one of the little ups as we continue our way to a collective down."
    • -3 0 -3 Paul Apr. 10, 2015
      ""Global warming is just [a]natural heat cycle." We are currently in a natural COOLING cycle and yet global climate change is quite cleatrly warming the planet! Please explain your take on the science? Of course there are cycles, but anthropogenic greenhouse gas is not cyclical, it has demonstrably superseded the "natural" cycle. Bye bye human species, if we continue like this!"
  • +1 +1 0 unkown Oct. 16, 2018
    "I believe that humans did not cause global warming"
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  • +1 +1 0 aidan Oct. 16, 2018
    "humans are not the cause of global warming, it is a natural occurrence."
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  • +1 +21 -20 Noobthinker103 Nov. 4, 2015
    "Climate change can cause the butterfly effect (when a small action can cause a catastrophe), for example, if the climate rises, it can cause polar ice caps to melt, causing sea level to rise, which causes freshwater lakes to be polluted with salt, and we would have less drinkable water"
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  • +1 +18 -17 gary Apr. 26, 2015
    "While I do not discount the possibility in a small fraction of human induced warming, I believe most if not all warming/change is a result of processes outside our control"
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    • 0 0 0 help the earth May. 24, 2018
      "yes, some of the climate change is out of our control, now, if it was not for the negligence of the generations of the past we would be able to easer tackle this global crisis, but we are the generation of change we have the knowledge and power to change this. we can rain in global warming"
  • +1 +35 -34 chickenlickensticken Jun. 24, 2014
    "You know something is wrong with somebody's logic when their argument consists of personal attacks. The entire premise of pro in this case revolves around the assumption that "the debate is over", and you're crazy if you think otherwise, there is no room for questions.
    All I can say is we desperately need to stop polluting (which includes burning fossil fuels), deforesting, overfishing, and start finding sustainable solutions, and I think both sides can agree on that!!! These are more serious issues than whether or not we are causing climate changes, which do occur naturally, that is an undisputed fact."
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    • 0 0 0 Jeff Green Apr. 10, 2015
      "Climate change is now linked to the Syrian War, Australian drought, California drought. It is called human attribution. The extreme heat waves around the earth would occur much less with out the extra co2 in the atmosphere."
  • +1 +36 -35 Patrick May. 7, 2014
    "I don't believe that human activity causes climate change because there is natural cycle in which the average climate either goes up or down"
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    • 0 0 0 Jeff Green Apr. 10, 2015
      "That cycle was based on ghg's changing the earth's climate. Co2 does not care who put it there, it only does its job regardless of life on earth or not. Nor does it care one whit about us or life on earth."
  • +1 +30 -29 JoleCon54 Apr. 20, 2014
    "Before I will come to my actual argumentation, I want to say I am convinced that human activity cannot cause such big footprint on the Earth like the Global Climate Changes are.
    The Pro Haus says that in 2010 were CO2 levels the highest they have been in the past 650 000 zears. Another argument from Pro Haus is the increase of the temperature by 1.0 to 1.4 F over the 20th century. Let me come to my first argument. How exact and precisious are the measuring methods which proven these results? There are no examples how to determine levels of CO2 650000 years ago. All these figures are only hypothesis, not numbers from real world. I follow with my opinion which also should be taken into mind : What CO2 had breathed plants which were growing tens million years ago and then they were covered by soil to become a fossil fuel? Aren't they those amoounts of CO2 which we are now emiting to the atmosphere by burning fossil fuels?
    To the second point concerning the increase of the temperature. Let us try imagine a sphere with the diameter about 12750 km (Earth). And let us imagine that millions of dwarfs dig into the depth about 5-10 km. This represents about 0,078% of Earth diameter. Can you explain me what footprint it can do ?"
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    • +1 +1 0 AV May. 27, 2014
      "Actually they can determine the CO2 levels in the air 650K years ago by measuring air bubbles trapped in ice."
  • 0 0 0 jeffy Paul Dec. 4, 2018
    "Humans are not the cause of climate change we are inbetween ice ages."
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  • 0 +11 -11 Max Mar. 26, 2017
    "Trace gases like carbon dioxide, nitrous oxide, and methane actually only make up a tenth of a percent of the atmosphere, and in ten years, we only brought it up to three tenths. It seems like a lot to get so worked up about."
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  • 0 +19 -19 john Jul. 11, 2016
    "The Cause Of Climate Change IS Idont Know"
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    • 0 0 0 bob Apr. 4, 2018
      "funny ha ha"
  • 0 +18 -18 Damyan Jun. 9, 2016
    "I agree with all that you have to say"
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  • 0 +47 -47 Logic Apr. 4, 2014
    "It is scientifically inappropriate to assume that correlation is equitable to causation. Until a direct cause-effect relationship is determined, this issue should be regarded as a cyclic process. Climatology reveals that the earth has been in a series of heating and cooling periods for several thousands of years -- climate change is an old concept that is being misinterpreted. If the lifespan of earth were divided equally into 24 hours, humankind would only come into play within the last tenth of a second. It is naive to assume that a species existing for such a miniscule amount of time has substantial influenced a world that has existed in balance for millennia."
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    • +1 +1 0 true logic May. 23, 2018
      "yes, you are correct that earth has been through a series of heating and cooling periods but this period we are in now is like no other we have seen record flooding in Bangladesh, record droughts in California and record hurricanes along the eastern seaboard of the united states. so sure there has been much heating and cooling periods in earth history but look outside look at the new look at the thousands displaced by drought, famine, flooding, and record storms. so tell me logic are you sure there is not enough evidence to say that humans are at the cause of this, we have built tens of thousands of factories so much there is a permanent haze over China and Gary Indiana, so please open your eyes and look at the truth."
    • +1 +2 -1 Jeff Green Apr. 10, 2015
      "that is why they have correlation measurements. CO2 correlates very well. And it also has the mechanism to do the warming. There may be other correlations without mechanism, but ghg's clearly are the target of interest. CO2 also has a very long lifetime in the atmosphere while water vapor is a matter of days. This is only part of the reason why human climate change is now fact."
  • 0 +46 -46 student Oct. 30, 2012
    "I don't think human activity is the main cause of the global climate change because climate change has existed before humans."
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    • 0 0 0 another student May. 23, 2018
      "sure climate change is as old as earth but I would like to point out that since the industrial revolution climate change has been happening at a rate that has never been seen before"
    • -1 0 -1 Cole Sanders May. 6, 2014
      "But when you look at the graphs , since humans have been on the earth we have been making it worse."
  • 0 +79 -79 Miles Apr. 27, 2011
    "Since there are normal fluctuations in global temperatures at all time periods, how can one know the cause of the current warming with any certainty? And how can the opinion of a government bureaucracy like NOAA or NASA be relied upon? This same NOAA is now establishing a Climate Service separate from the National Weather Service, when there is little or no evidence of there being any skill in climate prediction."
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    • -1 +1 -2 James Feb. 3, 2014
      "You are absolutely right, Miles. You can not trust the government, or the "scientists" who get fat off of government money, to tell us the truth. Just like there was no Dept. of Energy until 1973, and it was established ostensibly to free us from reliance upon foreign oil, and now, having ballooned to a bloated bureaucracy of about 60,000 employees and a cost of tens of billions per year, we still are as dependent on foreign oil as before. It is just another sneaky and vile attack on the American taxpayer at the hands of those promoting the proliferation of socialist big-government. That isn't some conspiracy. It is fact. The DOE is just one fine example."
    • -2 +1 -3 Isabel Apr. 10, 2013
      people AREN'T getting skin cancer randomly. They stay out in the sun too long. That would happen to people in the 70's, too.
      Sorry to offend if I did."
    • -4 +3 -7 ... Mar. 2, 2012
      "So all the CO2 we are putting in the atmosphere is doing nothing. You are right on the planet's tempuature and weather fluxuation, and that we are going through a heat break in the world, but what about all the harmful gasses we put in the air? In the 70's there was so much polution in the world that part's of the O zone were disolving, leaving area's on earth where people would randomly get skin caner from the sun. And our dependancy on fossil fules put much much more CO2 in the air warming it up more than usual."
  • -1 +28 -29 Connor Jan. 12, 2016
    "Global warming is caused by two things burning fossil fuels and deforestation. If we burn less fossil fuels and plant trees where they are cut down then the global temperature may go down dramatically."
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    • +3 +3 0 awesomeness May. 19, 2016
      "Global warming is caused by more then just burning fossil fuels and deforestation."
    • +1 +2 -1 kieyona Aug. 25, 2016
    • 0 +1 -1 Chris Dec. 12, 2016
      "Very true, but Global Warming is not only caused by the two great one though"
  • -2 +30 -32 NattyBumppo Nov. 28, 2015
    "The data is biased for a number of reasons (a) I can measure temperatures (inside and/or outside my house) that have greater deviation than the statistical science observes. Basically nobody can measure local temperatures to draw conclusions on a global basis (b) instrumentation is primarily in regions where people live on the globe, not at high altitudes or polar regions, or even deserts. (c) 100 year old measurement data is not accurate and is unverifiable (d) CO2 is not a first-order parameter affecting global temperature (e) the solution to reduce CO2 emissions (assuming man-made causes is even true) is ineffective. Reducing human population is the only one that makes sense, but politicians refuse to embrace that solution."
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    • +1 +1 0 Jake Apr. 25, 2017
      "Unfortunately, you might be correct. The only way to decrease CO2 emissions is to reduce the global population. But, this will result in a mass genocide of not only newborns (such as China's one-child rule), but a significant part of Earth's population. This wouldn't just be a couple million, which is insane by itself, but hundreds of millions dead. Even this will not totally reverse what our ancestors did before, and what we are doing now. This "final solution" might be the only way to try to fix the climate, but not without massive loss and unethical ways."
  • -2 +28 -30 Scott Braspenninx Nov. 29, 2014
    "I commented on the PRO side also. In ways I am skeptical that climate change predicted by some models will occur. I'm disabled after a long career as an environmental engineer for industry, educated in chemical engineering. Those not familiar should look up the precautionary principle. Some of mankind's biggest mistakes have been underestimating our impacts. For a long, long time people felt untreated wastewater could be put into surface waters forever with no major impact. People felt certain animals could be hunted without discretion with no major impact. The same holds true with forests. I was a skeptic for 10 years, but now feel the precautionary principle needs to be applied. I sincerely hope mankind's activities can significantly affect the atmosphere enough to cause major adverse impacts. However, life on Earth is too important to make assumptions when there is enough evidence to warrant taking precautions until we know with much more certainty. The danger in taking precautions unnecessarily are far outweighed by ignoring it and being wrong. The Earth is the most complex equilibrium, we need to understand it better."
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    • 0 0 0 Jeff Green Apr. 10, 2015
      "Delay is death to life on earth. The less we delay, the better earth we will have to cohabitate with."
  • -2 +30 -32 Candace May. 8, 2014
    "This is one of the biggest shams/cons in history, primarily because of the result.. GEO ENGINEERING.. look up pro/koolaid drinkers.. we are being poisoned.. everyday by tons of chemicals (Aluminum, Barium, Strontium 90). This creates a haze that is supposed to "protect" us from the "negative" effects of the sun.. OH REALLY!? Proven and now implemented by our Government. Thanks for that! Your life- young ones -WILL be affected.. Monsanto now has a choke hold on the EPA, and with GMO your "sustainability" issues are GONE. Get it, Got it, Good."
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  • -2 +51 -53 wiLL Jan. 24, 2014
    "CO2 and rising temperatures have no correlation. If you look at a graph, CO2 has been increasing for the past few centuries while temperatures have fluctuated up and DOWN."
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    • +1 +1 0 Liam May. 2, 2014
      "Just Google "Vostok temperature and CO2". (Vostok is a weather and climate research station in Antarctica, and it has produced many ice cores commonly used for historic climate research.) Over thousands of years, CO2 and temperature have a very strong correlation. But we have yet to see the bulk effects of the CO2 being added to the atmosphere now. Remember, climate is long term. It takes a while for the climate to react to things like increases in greenhouse gases."
    • 0 0 0 LaDonna Apr. 26, 2015
      "It's a fact that carbon dioxide in the atmosphere is rising faster than any point in history and the weather is getting warmer, and there are correlations. Over the past 10,000 years the CO2 ppm has rose from 260 to 280 ppm, that's an average of one ppm per 500 years. The current rate of increase is two ppm, per year. (Eggleton,T. pg 154). Rather simple things like comparing ice samples taken from glaciers, or comparing the growth rate of trees by their rings during various seasons can scientifically prove these facts. Co2 contributes to the greenhouse effect, which acts as an atmospheric blanket. I disagree that CO2 levels have no bearing on the climate change."
  • -2 +47 -49 Eric J. Feb. 19, 2012
    "I wonder how many people look at the data and think for themselves, versus just eat what they are spoonfed."
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    • +1 +2 -1 Larry Jan. 11, 2014
      "Like you?"
    • -1 +5 -6 Diana H. Jun. 16, 2012
      "You would be surprised."
  • -2 +68 -70 John Sep. 23, 2011
    "The earth would eventually warm up on it's own. The earth has also gotten warmer over time."
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    • 0 +2 -2 David Reddkier May. 24, 2014
      "Dear John,
      How does it feel to be so ignorant? That statement has no fact or even strong opinion, let me help you actually form a complete sentence. Nasa and Greenpeace executives have detected that CO2 levels have DOUBLED for the first time in 650,000 years. Satellite, government, and intellectual proof. Read up, you really need it. "Climate Change:Evidence." National Aeronautics and Space Administration. Web. 24 May 2014. ."
    • -3 0 -3 Jeff Green Apr. 10, 2015
      "The magic wand theory strikes again. The earth changes temperature when something else changes effecting it. Science can tease out why we change. Why we have changed in the last 150 years is human emissions of co2 associated with the industrial revolution."
  • -2 +73 -75 Lee Apr. 27, 2011
    "I think that any change in the weather patterns is historically cyclical by nature and not caused by humans. Besides, I think warmer weather would be a good thing for us, better temperatures to grow crops, etc."
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  • -3 +8 -11 highup Aug. 29, 2017
    "it might rise over the cities"
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    • 0 0 0 Mmonson Mar. 29, 2018
      "That is true"
  • -3 +15 -18 Erin May. 20, 2016
    "I think that human activity is not causing Global Warming one because it happens naturally NOT by humans!!"
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  • -3 +16 -19 smooth Apr. 29, 2016
    "The reason climate change is happening is not because of human activity, it is because, earthquakes are causing volcanic activity, and that is causing climate change, along with the sun."
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  • -3 +20 -23 Haley S Apr. 28, 2016
    "Carbon Dioxide has been around since before the dinosaurs. Are you telling me the dinosaurs created it? Or was it just the earth doing what it does"
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  • -3 +20 -23 Jazzy LaRae Keplinge Apr. 18, 2016
    "most of the climate change is from nature its self and it is mostly caused from volcanos and other things that nature has for it."
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  • -3 +21 -24 Dom 11 years old Jan. 27, 2016
    "The climate has been changing for billions of years on this Earth, it's just part of how the Earth works. It just means that the Earth is moving closer to the sun. Diana H said "There are 7 BILLION humans living on this Earth: driving CO2 producing cars, using electricity from CO2 producing plants, getting rid of trees that get rid of CO2, etc.
    How could we not have an effect?"

    We do have an effect on global warming, yes we do. I'm sure most people agree with that. But Why should we worry about that.

    CO2 is produced by humans EXHALING.
    There is nothing we can do about our climate changing.
    Our earth is not going to shut down in 2 minutes. At this rate, it would take billions of years to "Ruin our atmosphere"."
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    • 0 0 0 Jake May. 18, 2018
      "the sheer amount of CO2 produced by humans exhaling is insouciant to produce enough CO2 to cause climate change but factories and cars can produce enough and the amount of CO2 in the atmosphere has been on the rise."
  • -3 +17 -20 Erik N. Jul. 5, 2014
    "There is correlation and causation. The sensitivity analysis says CO2 will cause warming. How much is debatable. You need to look at the costs. Adding a spoonful of sugar to a gallon of water will make it sweeter. But will you really say eliminate sugar so there is no sweetness? Water vapor is much more significant to cause warming, and the feedback effect of any warming is not sufficient to justify the costs being proposed to cut CO2. It has become too political, with theories justified as facts which cannot be proven. Models are not proof. Additionally, once you hear that every result of global warming is negative suspicion wil be raised. It is not plausible that a warming planet will have solely negative effects. Humans are tropical animals, and plants benefit from a longer growing season. Trying to claim that not matter what, a warmer planet will only cause negative effects is implausible (the negatives can outweigh the positives, but only having negatives implies bias)"
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    • -1 0 -1 Jeff Green Apr. 10, 2015
      "The economic basis clearly favors reducing ghg's. the future warming causing sea level rise will be so destructive that the economics favors getting into renewable energy as soon as possible. The sooner we do so, the more money we save to the tune of 500 billion per year world wide. The longer we delay, the more we spend adapting, and we still have to go to 100% renewable energy."
  • -3 +26 -29 Marti H. Apr. 21, 2014
    "Climate is changing without any doubt, but fluctuating the temperature is normal cyclical process, it is slightly warming nowadays. Global warming, or rather Climate changes could be just another natural cycle, as many others and there is no evidence of contrary. Humans history and his historical records of measurements simply are just one of the very short period in Earth history. Human's history isn't the same as history of Earth.

    Humans do many dangerous things to our Earth - for example pollutions of gases harming the ozone layer, genetic modifications or discharging many poisons to water - all this should be stopped . CO2 is natural part of our nature and it's pollution is one of the smallest harming act executed by humans."
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    • 0 0 0 dave becker Nov. 25, 2014
      "last year consumption of fossil fuel put 40 BILLION tons of carbon in the atmosphere. About 6 TONS per person on the earth. Next year it will be larger. The year after that it will be larger. Seems logical this MIGHT be having an affect on our environment???"
  • -4 +7 -11 Caleb May. 12, 2017
    "I believe global warming is created when volcanoes erupt and let out fire with CO2."
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  • -4 +10 -14 John H Aug. 11, 2016
    "Please notice the amount of government branches noted as the author in the PRO column. Please understand the profound amount of money and power that is obtained if the public believes that a world wide disaster is eliminate."
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    • 0 0 0 Leon Aug. 2, 2017
      "I think you mean "eminent" in stead of "eliminate"..."
  • -4 +15 -19 Jesse Dec. 16, 2015
    "What about the ice age? The earth gradually goes through phases like this."
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  • -4 +20 -24 Dan Jul. 18, 2015
    "Not one pro comment gives a factual argument refuting a con fact. We all want a healthy planet and we also should all recognize the number of poor people that will starve if lower cost energy is not used to produce food. Both sides need to be analytical and honest."
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    • 0 0 0 harry Jan. 30, 2018
      "Renewable energy IS lower cost, and it saves the planet. And yet still republicans want coal."
  • -4 +16 -20 Descole Paradox Nov. 24, 2014
    ""We should all call out faulty science wherever we see it, including the blind belief (without any evidence beyond the faulty models) that humans are largely responsible for climate change," says William Gray, PhD, Professor Emeritus of Atmospheric Science at Colorado State University. Many people are worried about climate change and global warming, but it is simply nothing to panic about. Global warming has nothing to do with humans, and is more connected to the sun and its natural patterns.

    Activists will tell you that, in the 20th century, global temperatures have risen about 1.2F. But what does this matter? One degree. One. And yet people keep trying to turn this into a moral issue. The sun goes through natural heat cycles. It has heated up and cooled down in the past, and will continue to do so. Other planets in our solar system are heating up as well. A 2003 study by researchers at the Harvard-Smithsonian Center shows the temperatures from 1900 to 1990 are practically the same as those from 1000 to 1100 AD."
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  • -4 +31 -35 Jeff Jul. 17, 2014
    "Apparently not many on either side read. The earths temp has not, as in N O T, increased in nearly two decades. Not to mention that NASA has admitted to changing data points. If i was on the "pro" side I would stay away from quoting NASA."
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    • -1 0 -1 Jeff Green Apr. 10, 2015
      "That is a typical denier messaging supported by the carbon kingdom. The whole supposed faux pause the oceans were actually absorbing energy with higher efficiency. Scientists just don't say things they can't back up with facts and open sources of information."
  • -4 +33 -37 John May. 20, 2014
    "I live in the far north and have had for over 40 years. The climate was a little colder in the 70's but we still reach -35 just about every winter. Do I believe in climate change, yes. The climate has changed ever since the beginning of the earth. Do I believe it is caused by man, NO! The volcanoes that have erupted in the last 40 years have dumped more pollution and gases than all of mankind has produced since the beginning of the industrial age. Follow the money, the money is going for the climate change/global warming advocates. The money that the oil companies have donated to the con side of the issue pales to the billons spent just by the U.S. Government for the pro side. One last point I would like to make, coming from someone who has lived in the cold, be careful what you wish for. If the planet changes for a colder climate man will cease to exist just like the dinosaurs did in the last great ice age. So bring on the CO2 and keep the plants and forests growing and healthy, because ice belongs in your glass not all around you."
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  • -4 +15 -19 Tap Dog's Dad Mar. 15, 2014
    "This system seems to be tilted against con arguments. after taking the time to submit my take on the issue, the entire thing was erased."
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    • 0 0 0 True Logic May. 18, 2018
      "Well, the reason this system seems tilted is that most people in this world believe in climate change is caused by humans. though I am sorry that your comment got deleted"
  • -4 +19 -23 Fishtree Apr. 19, 2013
    "I am hearing a few arguments that CO2 is poisonous. It is poisonous, but only if your body is flooded with it and you cannot get it out. CO, carbon monoxide, IS poisonous and very dangerous, being the reason you must keep any place with anything burning well ventilated."
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    • +3 +3 0 Isabel Nov. 20, 2013
      "@Bryan: Where were you during the ice age? oh yeah... NOWHERE. Get with it, folks. This happen often, and will continue to happen whether or not we are here or not."
    • -4 +1 -5 Bryan Sep. 17, 2013
      "you want data? go outside, is it like it was 10 years ago...20 years ago?No it is not! you act as if you are some great scientist wanting data, wanting proof. well sir/or madam. keep declining, you will not get far my friend."
  • -4 +46 -50 Elise Whitworth Real Nov. 22, 2011
    "I have come to the conclusion that Global Warming is a natural occurrence. The world's climate has been constantly changing for over millions of years. There have been Ice Ages in our world's history, the ice had to melt due to a warming of one kind or another. This is they way the world is. The Earth is always constantly correcting itself and it will continue to do so until the end of our days and the end of time. There will be Ice Ages in the future and we as a human race won't be able to stop how the climate changes. The Earth will continue even with it's climate changes."
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  • -5 +23 -28 Willow May. 8, 2015
    "Global warming is a piece of crap. we did not cause it ok. Global warming is just like the ice age. What did we cause that too? Have I missed something here? Did I some how cause the ice age when I DIDNT EVEN EXIST! NO! The Earth solved the ice age itself and it will do the same thing with global warming. I mean what did the Earth do when we werent around. Did the earth somehow become depentant on you to fix its problems? Really because i must have missed that update claiming you to be the Eaths doctor. Get your head out of the clouds because one day the earth is going to get pissed off at up and open up the ground beneath your and you die. You got your own problems boo focas on those. If you belive in global warming you need to chill the F out."
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    • 0 +1 -1 LIz Apr. 10, 2017
      "i agree with you. we have nothing to do with the global warming. i dont understand why people are so worked up about it either."
  • -5 +11 -16 TheCorrector Feb. 4, 2015
    "Climate change is as old as the Earth's history. So climate change is a fact. From this fact it does not follow that "microchanges" evidenced in the last 20 years indicate unusual climate change, let alone that caused by human processes. I am sure pollution is not good for the environment, and am against that. But there are many other reasons some of which include breaking the atmosphere, a stratosphere filled with vehicle junk and other reflective metals, HAARP activities and weather control, but this is just my speculation. What scares me about this new movement is that you can't go messing with my atmosphere and I don't want you playing God with it. Good evidence exists to show the whole "Global Warming" (now "Climate Change" because they are not sure if we're heating up or cooling down...) issue is artificial and meant to benefit certain companies who will be in charge of the cleanup, these the same people who have been unable to find any alternative to coal or oil. Funny isn't it."
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    • +1 +1 0 correctors corrector May. 21, 2018
      "sure climate change is as old as earth history but we have been experiencing record highs and worse weather than ever. it has been proven that the co2 content in the atmosphere has been on the rise and same with the temperature, not to mention they are moving in lockstep, so is that just a coincident or not."
  • -5 +11 -16 Brandon Jan. 15, 2015
    "In the post war industrialization time period temperatures of earth actual yd ripped. You would think that during a time with so much CO2 being produced that the temperature would rise, wouldn't you?"
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    • 0 0 0 Jeff Green Apr. 10, 2015
      "The energy content of the earth has risen. It might or might not show up in the atmosphere right away."
  • -5 +44 -49 Brent Jan. 24, 2012
    "No, i think global warming is just part of the normal earth cycle, and that the earth has been through this before, and there were no factories, no cars, nothing, yet the earth still heated up, and cooled down, heated up, cooled down. We arent exactly helping with all of the polution, but at the same time we arent so much hurting it."
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  • -5 +34 -39 Elise Whitworth Nov. 21, 2011
    "I believe that the world is not going through Global Warming. The world has gone through dozens of climate changes thought its millions of years, this is a natural change in climate. Since we have recently developed higher technology in the past hundreds of years we are now more alert to the changes, thus causing us to panic over natural occurrences."
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  • -6 +15 -21 lance May. 10, 2014
    "Ok for every one who thinks it is the humans fault for global warming explain how humans are the cause for it. Because no one is really the cause of the earth becomeing hotter."
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  • -6 +21 -27 Clark Feb. 18, 2014
    "I am a no.
    I was writing in lab books in the 60's, 70's, 80's, and 90's. Since the 90's I have been typing into a computer.
    I design tests. I live by scientific method.

    We make fun of our peers when their model does not predict things.
    The global warming believers are still at that stage of no working model.
    None of the believers predicted we would still be averaging 20M sq km sea ice in 2014 as we have for the last 35 years."
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    • +1 +1 0 Liam May. 3, 2014
      "Creating climate modelers is fiercely difficult, but look at the changes over the last 30 years. Temperatures and sea levels are rising, and more extreme weather is occurring. Our atmosphere is not behaving the way it used to. So stop making fun of your peers for not being able to do something so difficult, and look out the window."
    • +1 +2 -1 Demothesis Mar. 25, 2014
      "So, how does this show that humans are not the cause of global warmind huh? This is just dissing the Pro's. I'd like to see your evidence."
  • -6 +47 -53 David Apr. 22, 2012
    "Now granted humans aren't helping the environment and are polluting. We deffinetly need to change but who is to say that humans have not been around along enough to expirience a period of change that works in a cycle as illustrated by scientist the earth gradually fluxuates warming and cooling. Global warming is more of a conspiracy invented by Al Gore."
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    • +2 +4 -2 David Jun. 4, 2012
      "I never said humans weren't responsible. But how do we know global warming is all on us? We don't. We just don't know. You are simply speculating on that fact but actually the earth has always fluxuated and got warm and cold. Maybe it has something to do with the fact we are overdue for an ice age. We just havent been around long enough.But what I do know is Al Gore uplifted this and heavily promoted this to earn money and plant trees."
    • 0 +2 -2 Isabel Apr. 10, 2013
      "That's just the thing though. Global warming ISN'T all on us. Ya know the Ice Age? Yeah. That one. Well, the Earth warmed up, yeah. There is just one small flaw in your logic...WE WEREN'T THERE! Clearly the Earth is more than capable of doing it's thing without us doing anything. Now, with that said, humans today aren't helping any more then they are hurting. All we are doing is speeding the process up. We aren't causing anything. Just contributing.

      Sorry to anyone who I offended."
    • 0 +4 -4 Diana May. 24, 2012
      "By the way, the idea of global warming was there before Al Gore. He just heard about it, and knew it was a serious and important issue, and acted on it.
      Did you know that the 6 billion humans on Earth are adding tons of carbon dioxide into the atmosphere? And how could that not make a difference?"
    • -5 0 -5 Fishtree Apr. 19, 2013
      "Is that you David? This is Camrin. I use the username Fishtree. Global warming is not a myth, however, it is not the humans' fault at all."
  • -6 +32 -38 Salma Nov. 21, 2011
    "I feel like global warming is primarily the earth and nature doing it's thing and evolving. Though humans do leave carbon footprints which affect the environment around us; that is not neccessarily the cause of the polar ice caps melting. People should stop worrying so much and naming names and figure out a way to survive if being harmed at all."
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  • -6 +39 -45 Antonio Ponders Nov. 21, 2011
    "Global Warming is not logical considering the temperature has risen since 1750. That doesn't make since considering there really was no scientist yes i know there were great finds but back then you really couldn't find the temperature or how deep the ocean was they didn't have the tools we do now for findings of this nature."
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  • -7 +13 -20 SIMON NJOROGE MWAURA Aug. 7, 2014
    "Global warming and climate change is not caused by humans.The climate change and warming is caused by the amount of dry heat wave generated by the global semi- arid, arid and deserts to the atmosphere.The dry heat wave pushes the cooler layer in the atmosphere further and further by accumulation warm layers in the atmosphere. The absolute solution was to reclaim the global semi-arid,arid and deserts"
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    • 0 0 0 Jeff Green Apr. 10, 2015
      "The energy leaving the earth in the ghg spectrums as measured by satellites has decreased. The energy as measured being reflected back the surface of the earth in the ghg spectrums again has increased. The source of warming on earth is in the ghg spectrums. Those ghg's were increased by human activities on earth. You must show a different source based in evidence where you think the energy really came from. Capice."
  • -7 +11 -18 procon Jun. 18, 2014
    "Read most of the comments on both sides. If the science is done (thanks Mr. Gore), can anyone tell me on what page of a report I can find where it talks about what the cause, in the rise of CO2 levels, is NOT? Should be simple right? That's the path an investigation should take when someone is trying to find out why something is happening. Process of elimination. When you've ruled out everything else, then what's left is, well, the cause. I'd be glad to review it..."
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  • -7 +17 -24 John May. 5, 2014
    "I believe that global climate change is not happening because the experts are using the scare tactic. They are scaring people into believing what they think. Experts from The Heartland Institute have said that oceans and forests can handle the extra CO2 we are putting in the atmosphere. Also that temperatures from 1000 to 1100 AD are very similar to those from 1900 to 1990. This shows that the earth cycles and the role humans play dose not affect what happens. These are all reasons why humans do not play a role in global climate change."
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  • -7 +17 -24 Brain Tree Mar. 19, 2014
    "In 100 years ---1.3 degrees? This "temperate," change clearly has happened previously (remember the ice age).

    It's making lot's of cronies money...hello solar city is not economically viable without the GOVERNMENT SUBSIDIES.

    IPCC has lied, and continues to lie. Very exhausted of the drum beat of lies. Inconvenient Truth projected massive disasters by 2014.

    STOP THE MADNESS ---- The United States citizenry will not fall for your fear propaganda again. I think liberals tapped with the healthcare scare. And now look at the mess."
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  • -7 +30 -37 James Feb. 3, 2014
    "I would like to see how much of the $99 Billion dollars spent (largely by the lib democrats, including Obama's $35 Billion blown in 2009) went to those "scientists" who are on the "pro" side promoting this absolute misrepresentation of statistics. It is common knowledge that creating a "perception of danger" creates a "need" to spend billions to investigate the perceived danger - not to mention a handy opportunity to funnel billions and billions into the hands of your friends (like Solyndra or the tens of millions given to Michelle's college roommate for the purpose of preparing the utter disaster we know as the obamacare website)."
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  • -7 +17 -24 David Oakley Jan. 21, 2014
    "It will not be climate change - whether naturally occurring or whether assisted in some insignificant way by human kind that will destroy the planet - it will be overpopulation and the desire of mankind to have it all. If you truly care for future generations then limit your progeny."
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    • 0 +1 -1 Jack R Mar. 22, 2014
      "Two babies per couple to replace the parents and sustain our economy. Planning a municipal budget or even a society on that would be extremely efficient and affordable. Utopia, if you will."
  • -7 +22 -29 bob Dec. 15, 2013
    "When i was in school it was all about the next ice age..all meant to get more money out of our wallets..and for VOTES.wake up people!!!!!!!!!!!!"
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  • -7 +21 -28 Fishtree Apr. 17, 2013
    "The earth goes through ice ages and hot ages. It is perfectly natural. Global warming is not going to kill the earth. Even if it gets 50 degrees hotter, then some bacteria will move to Antarctica and survive to repopulate the earth. Of course, we will probably die. Right now it seems that 3 facts are proven. The earth is warming, there is slightly more CO2 in the air, and the CO2 in the atmosphere reflects light and warms the earth more than it would without it. Without the CO2, however, we would all freeze to death. Ever think about that? CO2 is not evil."
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    • -2 0 -2 Isabel Nov. 20, 2013
      "THANK YOU."
  • -8 +16 -24 Michelle Oct. 18, 2013
    "Earth has had three ice ages right after three periods of super high temperatures. We are just ready and primed for the next one."
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    • +1 +1 0 Liam May. 2, 2014
      "We're already in the "next one." Warm period, that is. The problem is that our temperatures have been increasing very quickly. If greenhouse gas emissions are not reduced to just about nothing by 2100, we will struggle to keep global warming under 2 degrees Celcius within the century."
  • -8 +39 -47 @LoudAmerican Jul. 27, 2012
    "Global Warming - Realistically - it took warming to melt the BIG Ice Age

    Even though there are in fact temperature issues at hand
    science says there are surface warming evidences on other plants
    Before anyone concludes that humans are largely at fault clarify and justify the fluctuations on other planets then present a conclusion rooted in evidence.

    It appears as though what ever is effecting those planets may have a more direct link to our temperature changes"
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  • -8 +47 -55 Lizzy Feb. 4, 2012
    "I feel that we have too many skeptic scientists that think the world is going to end because the earth has got warmer, the world has survived so many ages like the ice age so why would it give up on us now?"
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    • +2 +3 -1 Isabel Apr. 15, 2013

      "It has survived so many ages like the ice age WITHOUT HUMANS" Therefore, we know that just because the earth is warming up does NOT mean that we are the soul cause. I has done it before...AND WE WEREN'T THERE!!!!! I am not saying we are all perfect angels, believe me. But I don't think we CAUSED 'global warming' or 'climate change'.

      Sorry to offend if I did. I am attacking he point, not the person."
    • +2 +5 -3 Diana May. 24, 2012
      "It survived "so many ages like the ice age" WITHOUT HUMANS! Humans have a HUGE carbon footprint. There are tons of human creations that put greenhouse gases into the air: car exhaust, intentional forest fires(yes, it happens, in SE Asia and other places), the burning of fossil fuels, etc.
      P.S. They do not think the world will end, just that the climate will get a ton hotter, sea levels will rise, there will be less fresh water, etc."
    • -1 +2 -3 CMB Mar. 26, 2012
      "Climate change is no the end of the world. People will adapt, we always have. The problem is it keeps getting worse.
      Climate change is inevitable. However if we make changes now to our lifestyles and old habits, we can subvert the severity of our situations. Sooner the U.S. will get on board with the rest of the world."
  • -8 +32 -40 Tally Moore Nov. 29, 2011
    "I do not believe in Global Warming. I believe that there is a time for an ice age and what we know as "Global Warming." The earth will always go through huge climate changes, like the ice age. I also believe that NWS monitoring stations have been located near artificial heat like asphalt parking lots, air conditioners, heaters, and other sources of artificial heat."
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  • -8 +37 -45 Kat Nov. 28, 2011
    "I don't think the world is going threw global warming. Of course human activity hasn't helped but we have been through this before. This type of climate change has happened throughout the history of the earth. There were no humans to be found when the ice age occured and when it ended."
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  • -8 +69 -77 Ray Jul. 21, 2011
    "Human activity is not a substantial cause of global climate change.
    1 - Dinosaurs went extinct due to global weather changes.
    2 - Between all the volcano eruptions and forest fires caused by lightning - more pollution has been produced that man can possibly do on his own.

    Also - what about the methane created by horses, cattle, and hogs.

    They are not human!

    I think the effects which man has is so minor that it's comparable to a puppy chasing its tail."
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    • +10 +10 0 Garrett Oden Nov. 17, 2013
      "Ok, i see your point, but your reasons are wrong. Methane from the cattle and horses do not have that big of an impact as the Carbon Dioxide that humans make. Also, dinosaurs, (some if not any) died from climate change, like the ice age. But, humans did not have what we had back then. Most of them died from a volcanic eruption, the asteriod theory, it is true, and just predation."
    • 0 +2 -2 rhaugen45 Apr. 30, 2014
      "1) It is generally agreed upon in the scientific community that dinosaurs went extinct due to a large meteor strike that cooled the earth. That would be due to a large meteor strike, not natural long-term global temperature changes.

      2) Don't have the data to compare gases put into the atmosphere by volcanic eruptions and forest fires, but those are not causes of pollution--pollution is man-made. The aforementioned sources are natural.

      3) horses, cattle, and hogs are bred by humans. Land is cleared of carbon-dioxide-using trees to make space for grazing animals. Increased methane production by farm animals is human-caused."
    • 0 +4 -4 CMB Mar. 26, 2012
      "The huge population of cattle is human induced. Sure they have make almost about as much greenhouse gas, but these animal populations are so huge because we mass produce them."
    • -1 +4 -5 Fishtree Apr. 17, 2013
      "Dinosaur Extinctions are all weak hypotheses! It is currently impossible to prove any extinction method. Please do not use them as proofs. I do believe that man did not have a major effect in global warming, but I do not like dinosaur extinction being used as proof."
    • -1 +4 -5 Diana H. Apr. 13, 2013
      "That's always happened (with the cattle).
      Also, the methane in the atmosphere is only a fraction of the amount of CO2."
    • -1 +8 -9 daisey winthrope May. 17, 2012
      "while i am on the pro side i admire your statement because you have actual evidence and not just a silly comment."
    • -6 +6 -12 Josh Oct. 16, 2011
      "Well, the dinos died off because a meteor hit earth and blew up a ton of ash. And, also, have you ever been into the heart of a huge city, like New York City? Smog everywhere."
  • -9 +34 -43 Ashlyn Nov. 17, 2011
    "I would say that it would be less likely to be man made problems because we don't make that much of a impact in the environment. we may be a contributing factor but weather changes have been happening since the beginning of time. i doubt we were the cause of the last ice age and i dont think we are the cause of the climate changes now."
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  • -9 +31 -40 Ilene Nov. 17, 2011
    "The earth's warming is not caused by greenhouse gasses, our earth has gone through ice ages and melt downs. Right now our earth is going through a melt down and many years from now it will go through another ice age."
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    • +1 +2 -1 Fishtree Apr. 19, 2013
      "Isabell- by plants Diana means factories and such, not the living creatures. Don't worry, I agree that global warming is not our fault, I just wanted to point this misunderstanding out."
    • +1 +3 -2 Ky Face Dec. 8, 2012
      "Co2 is not a poison, its natural. Diana, you my friend will continue to put out Co2 no matter WHAT you do."
    • 0 +1 -1 Isabel Nov. 20, 2013
      "Thank you Fishtree. You are very intelligent, by the way, as your posts would suggest, anyway. We need mor epople like you on earth."
    • 0 +1 -1 Isabel Apr. 15, 2013
      "I meant to say the plants produce Oxygen, not Carbon Dioxide. Sorry.:/"
    • 0 +2 -2 Isabel Apr. 10, 2013

      What do YOU suggest we do to save the world? Stop breathing? Kill off everyone who breathes too much in your opinion? God wouldn't have made us need to breathe if he was worried for the planet's health because of CO2. I promise.
      To address your "CO2 producing plants"... I don't know of any plants that produce CO2. I know of many plants that use CO2 and produce Carbon know...the stuff we need to SURVIVE?
      I am honestly, truly, and deeply sorry if I have offended anyone. I am a sarcastic person, but know that this was not an attack on anyone, just the points being made."
    • -5 0 -5 Diana May. 24, 2012
      "There are 7 BILLION humans living on this Earth: driving CO2 producing cars, using electricity from CO2 producing plants, getting rid of trees that get rid of CO2, etc.
      How could we not have an effect?
      Tell me."
  • -11 +35 -46 Nate May. 14, 2012
    "Temperature change PRECEEDS CO2 increases, not the other way around. Temperatures have always varied in history, why would the change be our fault now? The sun is the cause of temperature changes and the variations come from temporary increases or decreases of solar radiation. ALL the facts point to it being normal for temperature change. Remember ice ages? The only evidence presented for global warming is people saying "see, it is global warming.""
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  • -12 +35 -47 Trey Nov. 17, 2011
    "I believe that global warming is caused by nature is responsible for the earths climate change. The reason i think nature is responsible is because they show me proof and facts stating the problem."
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    • -1 +1 -2 fishtree May. 30, 2014
      "What proofs/facts? I agree with you, but you have no argument."
  • -13 +13 -26 BIll Jun. 2, 2013
    "Our climate does fluctuate, but overall there is no change. There is no consensus among scientist many question the questionable methods data is collected and the deception used to push an agenda. The danger is not climate change but rather it the results of the belief in it which will bring the US to third world status."
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  • -13 +14 -27 John Jaeger May. 22, 2013
    "The bottom line is alleged to be "man-made carbon dioxide." The Keeling Curve shows a miniscule 1.3 part per million annual increase in carbon dioxide for forty years. If humans cause less than 4% of that 1.3 PPM, then that means ~.04 parts out of 1,000,000 are driving the climate? Not a chance. Total greenhouse gases are in excess of 26,000 parts per million, with water vapor being dominant. This global warming is a fraud, perpetuated by people who have gotten billions of dollars in government grants. They want to keep taking tax dollars for "research" which always "proves" whatever they want it to "prove.""
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    • +1 +1 0 harry Jan. 30, 2018
      "you guys are missing the point. humans are destroying the planet, whether or not co2 has anything to do with it. Isn't it time we stopped abusing our planet and had some moral responsibility?"
  • -14 +22 -36 daisey winthrope May. 17, 2012
    "although we as humans need to take better care of our home, the earth was going to eventually errupt on its own due to old age as predicted the sun is."
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  • -14 +31 -45 glen Diesel Nov. 17, 2011
    "for my comment, rising Co2 levels are a result of global warming, its not the suns fault. Models dont work to show the result. The result of rising temp. are because of the water vapor levels. Glen Diesel signing out......."
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  • -33 +35 -68 josh gudden Nov. 21, 2011
    "Global warming is fake and no one cares about it. It is all nature and all you people saying its real are wrong! just because al these scientists say its real doesn't mean it is, scientists also said that the world was gonna end and it didn't so BOOM BOOM SKADOOSH!!!"
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    • +12 +13 -1 jonathan lopez Sep. 18, 2013
      "scientists didnt say the world was going to end, the aztecs did/ get it right. BOOM BOOM SKADOOSH"
    • +10 +15 -5 Diana May. 24, 2012
      "There are 7 BILLION humans living on this Earth: driving CO2 producing cars, using electricity from CO2 producing plants, getting rid of trees that get rid of CO2, etc.
      How could we not have an effect?
      Tell me."
    • +5 +6 -1 katelyn w. Jan. 13, 2014
      you are wasting your time criticizing other peoples comments that are really just smarter than yours, you can't tell Diana that she can come back when she has "something new and valid to say" when you are the one commenting and other people's bad comments, really people should be telling you to "come back when you have something new or valid to say" okay-and like you said before-god bless."
    • 0 +5 -5 daisey winthrope May. 17, 2012
      "while i dont support your statement i dont appose it either. it is true that we cant believe everything we hear and no one cares, but it is coming.if you believe its not i would love you to back it up with evidence."
    • -2 +3 -5 Isabel Nov. 20, 2013
      Have you read the other posts? They are ALL "telling you" how we don't cause global warming. Take a step back an come back when you have something new and valid to say."
  • -41 +26 -67 nia May. 2, 2012
    "iam a con. i dont recycle my father drives a realllly old car and he fills his tank and some people smoke in my family"
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    • +6 +9 -3 daisey winthrope May. 17, 2012
      "not to be rude but dont you think its time for change then?"
    • 0 0 0 harry Jan. 30, 2018
      "theres nothing wrong with what she said. not in my book anyway, shes just trying to help you. You gotta admit that denying climate change is just an easy way for you to avoid actually making a positive change."
    • -5 0 -5 Isabel Nov. 20, 2013
      "@ Daisey Winthrope: saying not to be rude, doesn't mean it's not rude. That was very rude, and out of line. I think smoking is very wrong, and horrible for your body and the people around you, but It is NOT your place to judge someone else like that. You ought to be ashamed of yourself. God bless"
  • -63 +36 -99 JONATHAN WILLIAMS May. 8, 2012
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    • +17 +24 -7 daisey winthrope May. 17, 2012
      "you can say that while your swimming to burger king."
    • +3 +6 -3 Gabe Apr. 7, 2014
      "your a joke"
    • +1 +1 0 this is not a joke May. 23, 2018
      "I am sorry Jonathan that you are so blind to the reality that you cant see that our planet is in distress thanks to rising temperatures."
    • +1 +1 0 real logic Mar. 22, 2018
      "speaking of jokes, don't forget ignorant fools"
    • -5 +1 -6 Jeff Jul. 17, 2014
      "Agreed. It is the opposite of corporate greed. Those who buy into the global warming, er....climate change, er..... climate disruption also screamed "over population" in the sixties. Then shouted "global cooling and the second ice age" in the 70's. Now its global warming. Haha! Make up your minds. The pro's have absolutely no credibility."
    • -5 +4 -9 Isabel Nov. 20, 2013
      "If that happens, Daisey, I will PERSONALLY buy you a whopper."