Climate Change Debate
Pros and Cons
Video exploring critical thinking and how it leads to great citizen involvement
Last updated on: 8/15/2012 2:36:16 PM PST

Is Human Activity a Substantial Cause of Global Climate Change?

What do you think? Share your pro or con views and help us foster civil, intelligent discussion on important social issues. If you're looking to attack, harass, demean, or impersonate others, please go elsewhere. Read the rules on submitting comments at Please note that the pro and con comments and thumbs up/down votes reflect the views of readers and not necessarily of or society in general. Remember to enter your email address so we can notify you if your comment gets posted. Thank you!

PRO (yes) Comments (85)

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  • +26 +122 -96 Amiyah Oct. 21, 2011
    "I am a pro. I feel this issue is a serious matter and should be handled immediately. I understand us as humans need to survive as well, but I strongly feel that we don't understand what we doing to our planet. Our actions are effecting our world and animals and if nothing is done know while we still have time... Our world will never be the same!"
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    • +5 +13 -8 Ryan Oct. 26, 2011
      "You are totally right! I AGREE something should be done now our it will never be a solved as a serious issue"
    • +1 +5 -4 Fishtree Apr. 17, 2013
      "Our actions effect everything! Butterfly effect. Its all not that bad, some cause good things to happen. It is impossible to observe without changing what you are observing. For example, you watch some lions social structures. suddenly, they see you and eat you. confused by your unnatural clothes and lack of defenses against predators, they fight among themselves, completely messing up their social structure. This means that the life will survive whatever we throw at it."
    • -2 +1 -3 Liam May. 2, 2014
      "Fishtree, please think about what you're saying. You went from "Our actions affect everything" to "We will affect whatever we observe," then concluded that "life will survive whatever we throw at it." You really contributed nothing to this argument. Also, you should find your own "sufficient data" in order to argue with Diana H. I'd be interested to see it."
    • -5 +1 -6 Tap Dog's Dad Mar. 15, 2014
      "You have said exactly nothing that contributes to the "Pro" argument, in that your statements assume that the "Global Warming" argument is correct."
    • -7 +1 -8 Isabel Apr. 10, 2013
      "Give me evidence that not only it exists but that we are the soul cause I will recycle everything for the rest of my life."
  • +23 +85 -62 Diana H. 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.

    CO2 levels are rising at drastic rates. You ask me what the difference is? There are humans adding CO2.

    This is a ridiculous question. Of course humans are adding to global warming--it is going at an abormally fast rate. I DO NOT support this just because of the scientists.
    -I will respond to comments from CON. If you can give me a reason I can't argue with, I am changing sides."
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    • +4 +9 -5 Diana H. Oct. 28, 2013
      "I am not saying that humans are the SOLE cause.

      I am not a scientist, so I can't provide you the exact numbers. But it doesn't take a scientist to know that we contribute to global warming by producing more greenhouse gases.

      There are like 7 billion people on Earth.
      We help produce greenhouse gases, aka CO2.
      These gases cause the greenhouse effect.
      The greenhouse effect means the Earth gets hotter.
      The global temperature will slowly rise.
      Things will melt.
      Sea level will rise.
      Bad things will happen."
    • +2 +17 -15 Mother Nature Jun. 4, 2012
      "How do you know humans are responsible only. Have you been alive for thousands no never mind millions no never mind BILLIONS of years to know that the earth doesnt do this and that this isn't apart of a cycle the earth goes through."
    • +1 +9 -8 Fishtree Apr. 17, 2013
      "In order to argue with you, I need sufficient data. How much CO2 is our fault? How does that affect climate compared to the natural cycle? At what abnormally fast rate? Don't just barf up arguments from weak correlations, give me data."
    • +1 +16 -15 Diana H. Jun. 16, 2012
      "Scientists have been able to measure the CO2 content of the air since billions of years ago by drilling into the glaciers at the poles and testing the content of the air bubbles. The data also shows that the CO2 levels are higher than the natural cycles would cause.
      You might say that scientists are not always right, but this HARD DATA just compounds and reinforces the OBVIOUS fact that human caused global warming,"
    • 0 +1 -1 Brandon Jan. 15, 2015
      "During the post war industrial revolution the earth's temperature dropped. Wouldn't you think that in a time when there was so much CO2 being pumped into the universe that it would rise?"
    • 0 +8 -8 Isabel Apr. 15, 2013
      No, it doesnt prove that humans are the cause, It proves that there is a lot of CO2 in the world."
    • -3 +3 -6 Timmy Apr. 9, 2014
      "When vikings first discovered Greenland, it was GREEN, hence the name GREENland. There wasn't any industrial stuff going on back then. It will continue to heat up until Greenland is green. Also, during the Industrial Revolution was the Little Ice Age. So much stuff being pumped into the atmosphere then, and it gets colder in response. Hmm."
    • -5 +4 -9 Fishtree Apr. 19, 2013
      "So we know there was CO2 in the air billions of years ago. This hard data proves a total of... Nothing!"
  • +4 +34 -30 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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    • -3 +1 -4 Liam May. 3, 2014
      "A dark, stormy day? What?"
  • +3 +22 -19 lateria May. 29, 2013
    "yes global warming could kill the whole world by heat it is bad we need to change are ways"
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  • +3 +34 -31 unknowen May. 14, 2013
    "I am nutral And sorry about the spelling But honesty who is to say that people cause global warming or that the earth does it it self from its odd shape maby if we have a odd shape planet but there for just because people dis agree and agree doesnt make it bad or good see the people who belive in global warming try there best to save the earth and use bikes or skate boards or rollerblades and people who dont belive in it care about the earth but the atmosphere will be here for a long time so the people dont have to worry any more for the time being untell me have more proof of a humongas hole in the atmosphere and that we did it or we didnt"
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  • +2 +23 -21 Chuck Jul. 1, 2013
    ""I am Pro, Common Sense tells me, more Scientists agree then not, 7 Billion people living on this Earth, Drastic weather patterns/changes. Driven consumption and inflation, asphalt highways parking lots that never existed but do now". Bill Rees Why We're in Denial Viemo. "Great information on this site also." Thanks."
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  • +1 +3 -2 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 +4 -3 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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  • +1 +3 -2 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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  • +1 +5 -4 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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  • +1 +25 -24 Ezequiel Aug. 10, 2013
    "I Just Simply Feel That We Should All Be Responsible For The Actions We Do. Grow Up People. And Stop Global Warming"
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    • +6 +7 -1 Demothesis Jan. 5, 2014
      "Ok Isabel.... Why Dont You Stop The Way You Diss Everyones Replies Or Comments (I am messing With You Am I) Anyway you don't have to have solid data if everyone around you had it already, theirs not much to say. On that note, I don't see any data in your reply. For Ezequiel, you are right, we should feel responsible for our actions, but we don't even know half of what we've done.
      Also, Isabel, Maybe He Wants To Type Just Like John Green!!!"
    • -5 +1 -6 Isabel Nov. 20, 2013
      "FirSt LeARn hOw TO tyPe, tHEn i mIghT tAKe yoU sERioUslY
      (annoying, isn't it?)
      Oh, and it's not a question of maturity or age... just intelligence. We should be responsible for our actions in general. You drop something, you pick it up, ect. If you want to recycle, I am happy for you. Go for it. Ride your bike everywhere. Sing Kumbya around a "no smoke campfire" for the rest of your life. I don't care. But if your going to argue a point, have some solid data to back it, or step aside, son.)
      Sorry if I offended you. That was not my intention in any way."
  • +1 +44 -43 Ellen B Mar. 13, 2012
    "I am convinced about human activity accelerating climate change because the great majority of impartial scientists accept the data behind this conclusion."
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  • +1 +44 -43 adrianne Nov. 21, 2011
    "I absolutely believe global warming is man caused, not only because of the rising carbon dioxide levels in the atmosphere and the temperatures going from one extreme to another. It's the rapid pace of all these things happening. for instance the constant melting and re-freezing of the glaciers and the astonishingly high levels of CO2 found in the glaciers. Also human activity such as burning fossil fuels have played a part in the warming of this globe."
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    • -2 0 -2 Isabel Apr. 15, 2013
      "Man caused, or man driven?"
  • +1 +37 -36 Zoe Nov. 21, 2011
    "While I am mostly neutral, I am more inclined to the pro side of the argument.
    There was a ice age, back in history, in a time where there was no human released greenhouse gases. So it makes sense that global warming is natural.
    Why I am pro: I believe that while global warming is a natural part our earths climate changes, its driven to extremities by humans.
    The release of greenhouse gases is causing gases to accumulate in the atmosphere due to the ocean's and forest's inability to adequately absorb the gases. Inadequately- the ocean is absorbing it though. And the absorbtion of CO2 is causing acid levels to rise. The accumulation in the atmosphere is causing extremities in weather.
    I believe that global warming natural, but driven by humans."
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  • +1 +27 -26 Eunice Nov. 17, 2011
    "We can believe in global warming or not, but either way the Earth is changing. In my opinion we are hurting Earth by polluting it with gases that we are constantly using, maybe not making it warmer but it is changing it somehow. There is a reason behind all of it, but until we have more proof or a better explanation, global warming is the best option we have."
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  • +1 +33 -32 Emily Nov. 17, 2011
    "I am a pro because I believe Global warming is real. The amount of gasses that the human population gives of each year is very high. Cars and other human made gasses are causing far to many problems. The green house gasses are not being caused by the sun because the sun shines on us not from us like the human made gasses. The ice is melting in the Arctic because the Earth is getting hotter. The temp. is rising and the people that are causing all the gasses (everyone in the world) need to be watched much more closely."
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  • -1 +5 -6 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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  • -1 +30 -31 Linda C. Aug. 31, 2012
    "The arguments on both side are made cogently and with great passion. I come down on the side of PRO not just because the vast preponderance of science supports it, but also because the more people believe it to be true, the more people will likely make changes that will have a positive benefit to our global physical environment. Even if global warming is not caused by human activity, human activity will certainly be impacted by global warming and unless we take this seriously, there will be little incentive to change our ways so this planet is habitable by humans as things continue to get warmer."
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  • -2 +2 -4 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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  • -2 +3 -5 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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  • -2 +3 -5 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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  • -2 +3 -5 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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  • -2 +3 -5 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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  • -2 +4 -6 Cortes May. 5, 2014
    "Yes, we are destroying nature so nature is unable to absorb the co2."
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  • -2 +3 -5 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"
  • -2 +4 -6 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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  • -2 +4 -6 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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  • -3 +2 -5 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 +2 -5 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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  • -3 +4 -7 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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  • -3 +4 -7 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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  • -3 +4 -7 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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  • -3 +3 -6 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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  • -3 +5 -8 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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  • -3 +3 -6 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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  • -3 +11 -14 adam Jan. 8, 2014
    "its gone up becase dinosaurs didnt drive SUVs"
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  • -3 +17 -20 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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  • -3 +11 -14 Hannah Sep. 18, 2013
    "Im pro because human pollution is horrible and it seriously is changing our environment and killing our ozone layer!"
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  • -3 +15 -18 Skylar Feb. 7, 2013
    "This issue should be close to our hearts, even if it isn't caused by us. Although, I feel that it is because of all of the CO2 that we produce, the gas that fills the air and pollutes everything. It is our fault."
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    • +2 +2 0 Fishtree Apr. 17, 2013
      "CO2. I'm going to take a deep breath now... AAAARRRGGG!! CO2 JUST CAME OUT OF MY MOUTH! It's poisoning me! ung.. (crumple to the ground)"
    • +1 +1 0 Isabel Apr. 11, 2013
      "So....what do you want to do about it? Stop breathing?"
    • -2 0 -2 Skylar Apr. 11, 2013
      "That's a bit extreme, but I think that the steps that are being taken to lessen our contribution to global warming will help."
  • -3 +32 -35 Joel Apr. 21, 2012
    "Fossil fuels are carbon that was once in the atmosphere but got buried over millions of years in layers of decomposed plant matter, mostly. When that carbon was in the atmosphere, the earth's temperature was very high. Now it's lower, but if we take that stored carbon and put it back in the atmosphere, it's clear that the high temperatures will come back. Some people are looking for an excuse to make lots of money off fossil fuels, so they ignore this basic fact."
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  • -3 +28 -31 JP Apr. 21, 2012
    "The con arguments contradict themselves, saying that there are greenhouse gases, but playing down the warming from them, except from water vapor. They can't have it both ways. If they admit that water vapor is a serious greenhouse gas and water vapor in the atmosphere is produced in greater amounts when other gases warm the atmosphere, even just a little, then they should admit to the magnifying effect which is causing the fossil fuel gases to have both primary and secondary warming effects. And this leaves out the feedback caused by feedback loops that are nearly impossible to calculate like changing reflectivity, salinity reduction from ice melt and so on. If they admit to a small effect from human CO2, and they can't debunk the magnification and feedback, then the small effect becomes larger and they are disengenuous not to acknowledge that larger effect as having human cause. They pretend the CO2 is the only part that is human caused. Even if it were true that this human CO2 effect by itself is small (and there is much evidence that it is large), the other secondary effects should be included for a sum total of a large human effect."
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  • -3 +24 -27 Allison Apr. 16, 2012
    "yes it is happening but we are speeding up the process"
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    • +2 +2 0 Isabel Apr. 10, 2013
      "However, we are not the cause, let alone a substantial cause. "global warming", "climate change", call it whatever you want, but it has happened before, (ICE AGE), and it will happen again. Whether or not we even exist does not change or invalidate that.
      Sorry to anyone I have offended, for that was sincerely not my intention."
  • -3 +22 -25 Joshua Day Mar. 27, 2012
    "I believe that I am in a way pro, but I am also somewhat con. I have two sides to my story but i'm more pro. I believe that us, as human beings, have caused a bit of our troubles with global climate change. But studies have also shown that the climate has fluculated in the past like this. But seeing as how the Industrial Revolution has seemed to have caused the most recent rise in climate temperature. Those facts are hard to fight, so at this point i'm a swaying pro. No matter the facts, we still need to change our ways of doing things. Most of it is hurting the environment, much less the global climate."
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  • -3 +28 -31 Casey Hollingsworth Mar. 18, 2012
    "I do believe that humans are the cause of global climate change. Look at the weather lately. When was the last time it has been 80 degrees in March in Wisconson! If we didn't put so much pollution in the air we may still be at 15 degrees in March. If we keep polluting the air we may end up having weather like they have by the equator in Wisconson."
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    • 0 0 0 Candace May. 8, 2014
      "You comment is revealing.. it has changed because of Geo Engineering.. take some pictures.. become informed.. we are all had because they are spraying us daily with extremely irritating and harmful chemicals.. the rise in Alzheimer's and Autism is staggering!"
  • -3 +20 -23 Ciara Feb. 8, 2012
    "I am in the middle of this debate but I am closer to the Pro side of this debate. Fossil fuels are a main cause of global warming. Global warming is a natural cause but this global warming is MUCH more severe then it has been... EVER. Even if I am wrong or if the Con side is right we should all do our best to help global warming stop because it is not fake. Global warming is a very real and dangerous thing it will eventually kill our earth. So pitch in help out...please."
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    • -4 0 -4 Diana May. 24, 2012
      "Well, it is great you are closer to the right side...
      The 7 billion humans are putting tons of CO2 into the atmosphere. How could there not be an effect?"
  • -3 +21 -24 Leila (Lay-Luh) Nov. 17, 2011
    "So, after reading all the pros and cons of global warming, i'm pretty sure it is effecting our environment. All the CO2 and Green House Gases pollute the air and water, it is destroying our planet ! I don't think many people understand what we are doing to our planet, and before we know it, Earth is going to be a big DUMP !"
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    • +1 +1 0 Isabel Apr. 15, 2013
      "Yes, what we are doing is probably affecting our environment. I can't and wont argue with that. But I just don't think humans CAUSE it. However, I greatly appreciate you looking at both sides and mostly thinking for yourself. Most people just believed what the people around them tell them to.

      Sorry to anyone I have offended."
  • -4 0 -4 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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  • -4 +2 -6 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 +1 -5 wesley Jun. 2, 2014
    "humans are a big contributing factor in global warming"
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  • -4 +1 -5 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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  • -4 +1 -5 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 +2 -6 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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  • -4 +1 -5 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 +1 -5 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 +3 -7 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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  • -4 +4 -8 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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  • -4 +2 -6 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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  • -4 +6 -10 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 +5 -9 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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  • -4 +12 -16 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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  • -4 +8 -12 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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    • +1 +1 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."
  • -4 +10 -14 Andrew J Dec. 4, 2013
    "The evidence clearly shows that humans have a huge impact on the environment"
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  • -4 +11 -15 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 +1 0 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 0 Tap Dog's Dad Mar. 15, 2014
      "The polar bears are NOT disappearing. That's just another example of "Junk Science.""
  • -4 +14 -18 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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    • -1 +1 -2 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 +3 -8 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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  • -5 +2 -7 Allison Apr. 20, 2014
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    • +2 +2 0 anonymous May. 3, 2014
      "Compelling argument."
  • -5 +13 -18 Adam Peery Sep. 17, 2013
    "Human activity is a bad thing as studies show in recent years.
    Humans are the main source of pollution... We are the creators of vehicles which is the main pollution source.. If we hadn't been cutting down the Rain Forrest, and destroying the ecosystem in stead of getting rid of it, the earth wouldn't be as polluted."
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    • 0 0 0 Isabel Nov. 20, 2013
      "Great point! We should all sit around ans smoke in a circle instead, huh? or we could die. That would please you, wouldn't it?"
  • -5 +25 -30 daisey winthrope May. 17, 2012
    "although people dont agree with global warming being real, our evidence is:
    1the hole in the ozone layer
    2higher spfs for sun screen
    3antarctica being a melting mess"
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    • +2 +4 -2 rusty covey Aug. 27, 2012
      "Have they ever tested what is coming out the other side of the hole? Could this be how the earth regulates good air with bad air. We are facing many droughts in the world. The earth melting the arctic ice increases the water level around the world to help put moisture in the air to create rain in the dry regions of the world. Its all a process. The earth will take care of us."
    • 0 +2 -2 Fishtree Apr. 19, 2013
      "AAASRGGFFDDRRR!!!! 1. The hole in the ozone layer is caused by NO2, and has a total of NO effect on the temperature of the Earth. it just allows more UV radiation through, this is bad in it's own ways but has no effect on global warming. It is also only over Antarctica, so bring sunscreen.
      2. What are you talking about? This is just an improvement to sunscreen!
      3.Global warming is real. We however, have no part of it."
    • -1 0 -1 Isabel Nov. 20, 2013
  • -6 +19 -25 ashley walker Feb. 9, 2012
    "im pro because i fell that this matter is ver serious and mankind does not even care enough to think o\about what they are doing to the planet."
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  • -6 +29 -35 kohei Aug. 29, 2011
    "I think that a substantial cause of global climate change is human. Obviously, only human has the power to changed environment. Was ground contaminated before human use agrichemicals? Did air contained before human burned fossil fuels? Of course, I am one of them and the person made contaminated, which leads to global climate change. I think that what human should do now is to pay for the amount how we affect the climate and environment."
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    • +1 +1 0 mi66gt Sep. 15, 2012
      "The earth has always spewed out toxins. Before humans begain using fossil fuels there were huge pools of crude oil on the earths surface. There are places where sulpheric and /or hydrochloric acids vent from within the earth. What do you think comes out of volcanos rainbows and glitter?"
  • -7 +6 -13 sabrina Jan. 24, 2014
    "I agree"
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  • -7 +20 -27 Jack Davis Aug. 25, 2012
    "'31,000" scientists dispute g.w.--B.S.! Anyone with a bahelors' degree in any science major is considered a "scientist" by that poll."
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    • 0 +1 -1 Fishtree Apr. 19, 2013
      "This isn't about whether or not global warming exists. It's about whether we have a major part in it. Global warming exists. It isn't our fault."
  • -8 +19 -27 John Apr. 30, 2012
    "Dear nice, Is this issue partly a red herring and straw man issue? Global warming is not the only issue. Another important issue is pollution. Is pollution harmful? Are we causing global warming? Is global warming harmful? Can oil-company-sponsored research be unbiased? What are the benefits of thinking that we are causing global warming? What are the benefits of thinking that we are not causing global warming? Do we need to care about our environment? If we need to care, why do we need to care? Is it good to plant trees? If yes, why? Thank you."
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    • +1 +1 0 ariella Apr. 23, 2014
      "wow you think of it one way but how about the others that's what i did you try"
    • 0 0 0 Garrett O. Nov. 27, 2013
      "I think that pollution is part of global warming. The CO2 that gets put in the air is pollution and is also causing alot of damage. So, is it true, or is it not. Read my post up towards the new ones and you might find something out."
  • -8 +17 -25 Presley Nov. 17, 2011
    "I am against global warming because , the airs concentration of CO2 has risen significantly since the inception of the Industrial Revolution. I also believe that the propents of the notion that increases in the air and it leads to global warming."
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  • -10 +25 -35 joe Apr. 30, 2012
    "you idiots- global warming is real!"
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    • +1 +2 -1 um... Apr. 11, 2013
      "That's not what the question was about..."
  • -10 +25 -35 unknow Feb. 2, 2012
    "im pro for becauise i feel that this situation is serious and something needs to be done"
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    • 0 +3 -3 Nate May. 14, 2012
      "That is not a reason. It is just restating that you think global warming is real. This is the kind of thinking that is perpetuating the hoax."
    • -1 0 -1 Isabel Apr. 15, 2013
      "But do you think that humans are a substantial CAUSE of climate change?"
    • -1 +1 -2 ashley Sep. 20, 2012
      "well guess what im stating my own opinion and i believe that global warming is for sure a matter in our enviorment"
  • -10 +33 -43 Jack Jun. 24, 2011
    "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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    • +6 +6 0 Daniel Nov. 9, 2011
      "Most of us aren't trying to suggest that global warming isn't happening. The question was, "Is human activity a substantial cause of global climate change?" The debate here isn't whether or not global climate change is occurring, it's about whether or not it's humans that are contributing. As for me, I haven't done enough research into this yet to make a real opinion. I'm not feeling too strongly one way or the other yet."
    • +1 +1 0 Isabel Apr. 10, 2013
      "What Daniel said! Also...uh...I don't know where you have been, but the is a TON of controversy between scientists on this are only listening to mainstream, so you don't even know about the other ones.

      Sorry if I offended you."
  • -11 +14 -25 christina denice Sep. 18, 2012
    "Cars give off CO2, and make holes in the atmosphere. the holes let in U.V rays and is warming our planet."
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    • +2 +2 0 Fishtree Apr. 18, 2013
      "Wrong! All wrong. If there was a hole in our atmosphere we would be sucked into space, as well as frozen to death. NO2 damages the ozone layer and has created a hole over Antarctica, letting in UV rays and not having any effect on the temperature of the planet at all but makes it easier to get a sunburn if you live in Antarctica."
  • -12 +18 -30 Mike Special Aug. 26, 2012
    "That even chose to offer this question as a debate is deplorable. According to the National Academy of Sciences, between 97-98% of actively publishing climate scientists agree with the consensus conclusion that climate change is happening and that human beings are primarily responsible. From a scientific (i.e. non-political) perspective, this question is essentially settled.

    The manner in which ProCon presents the question suggests to its readers that the jury is still out on this issue. What they have done, in effect, is elevate the voices of the extreme (and often, though not exclusively, unqualified) minority to sit alongside the overwhelming majority. You might as well have a debate about whether the Holocaust happened and include disenting voices on that issue too."
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  • -12 +23 -35 David Nov. 17, 2011
    "i think that globle warming is happing becase of the CO2 that we are making from burning fossle fule"
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    • -1 0 -1 Isabel Apr. 10, 2013
      "We also make CO2 by BREATHING...Are you suggesting we stop that, too?

      Didn't mean to offend anyone..sorry if I did."
  • -14 +24 -38 Karen Oct. 25, 2011
    "The climate obviously is changing because of us. I mean honestly, you think your cars run off of rainbows and glitter? No all those gases that we polute our air with, PLUS man made chemicals burning into toxic waste that we can't even breath... you think the earth can handle that? Humans don't want to be in the wrong so they won't except anything if it attacks our species... There is a saying, 'If bugs died out, in a hundred years everything would die... IF humans died out, everything would flourish...' Marinate on that.."
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  • -16 +17 -33 zachary young Nov. 17, 2011
    "i think that all of this extra CO2 cant be good for the environment. the planet is getting hotter because of the CO2."
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    • +1 +1 0 Isabel Apr. 10, 2013
      "So what do you want to do about it? We need to create CO2 to LIVE."
    • 0 0 0 fishtree May. 30, 2014
      "He is talking about extra CO2. The CO2 we breathe out is in a constant loop, plants regenerate oxygen. fossil fuels add a SMALL amount of extra CO2, in addition to volcanoes and e few other natural processes."
  • -18 +18 -36 bruno Mar. 19, 2012
    "I think that global warming is very much caused by humans."
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    • +2 +4 -2 Joshua Day Mar. 27, 2012
      "In what way, if you don't mind saying, sir?"
  • -25 +40 -65 Paul Apr. 27, 2011
    "Evaluating whether climate change is real is not appropriate in a pro vs. con format, because:

    Whether climate change driven by human additions of CO2, methane, and other greenhouse gasses to the atmosphere is 'real' is a factual matter rather than a matter of opinion or policy. All factual matters become settled at some point. We no longer debate whether the earth is flat, or whether the sun revolves round the earth, or whether cigarettes contribute to lung cancer risk.

    Though details of climate change continue to be filled in by science, the point of settlement of the basic question has arrived for climate change... At this time, by continuing to pretend that there is a debate among scientists, you align yourself with those misleading the public...

    If you want to debate points of fact related to climate change, a better debate would be closer to the cutting edge.

    'Is the current level of CO2 equivalent atmospheric greenhouse gas concentration already too high for long term climate stability?"
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    • +8 +11 -3 Noah Jul. 24, 2011
      "It is not at all misleading the public to show that there is debate among scientist concerning the validity of global warming. Rather, it is misleading to argue that all or even a significant majority of researchers of various fields agree with this theory. It is typical for those who are insecure in their arguments to try and declare the debate over, and characterize those who disagree as illogical or serving some other hidden purpose.
      Read the quotes section for a quick look at the many highly regarded scientists who do not agree with this theory. Also, keep in mind always that there is a common tendency to confuse causation with correlation.
      If one looks to the scientific community for guidance on this topic, and keeps an open mind without political influence, one will find that there is much debate, and that the tools and models that geologists use are unreliable at best."
    • +2 +3 -1 Paul Aug. 7, 2012
      "@Noah: "it is misleading to argue that all or even a significant majority of researchers of various fields agree with this theory."

      Actually, it is not misleading at all. A significant majority of researchers in fields that are relevant (i.e. climate and earth scientists) do agree on this, as has been demonstrated over and over again"
    • +2 +3 -1 Ray Mar. 27, 2012
      "YOU SAID: If you want to debate points of fact related to climate change, a better debate would be closer to the cutting edge.

      Explain why science is claiming evidence which supports surface temperature changes on OTHER planets.

      Is that also a human factor?

      or ...

      Perhaps what is happening there (in part) what is happening here?"
    • +1 +2 -1 carter houtz Apr. 12, 2012
      "amen dude. you cant have this kind of thing set up. because you have people saying it does exist but they know nothing about it. i am with you i think that it should be based on fact not what someone thinks"
    • 0 0 0 Fran Mar. 4, 2015
      "Paul, I couldn't agree more. By making debates "pro" and "con," we give legitimacy to positions that have no basis in fact. There are people who think we should debate whether the Holocaust occurred. Should we give them legitimacy too? It is for the reasons you stated, Paul, that I am not a believer in "objective" journalism because there is no such thing as true objectivity. By framing debates about everything as pro and con, both positions are considered to be equally valid; but often, they are not, and unfortunately, the press is reluctant to explore the illegitimacy of one side's claims. Why should Imhoff even be represented here? Is he a climate expert? What credentials does he have other than political? Whenever he speaks about climate change, the press has a DUTY to point out his lack of credibility."
    • 0 0 0 Liam May. 3, 2014
      "There is debate among people doing climate research, if you count those hired by oil companies like Exxon Mobil (see pro argument #14). But there is not debate among real scientists."
    • 0 +2 -2 Fishtree Apr. 17, 2013
      "Have you tested 6 sets of 10,000 years, 3 being control with no factories, 3 being with factories? No. I don't think so. It is not completely proven yet, although the media tries to tell you that it is."
    • 0 +1 -1 Jack Davis Aug. 25, 2012
      "Good post. As for "whether cigarettes contribute to lung cancer risk."

      The same people who doubted that now doubt real doubted that too---Oreskes and Conway, Merchants of Doubt."
  • -36 +25 -61 monyae joyner Oct. 7, 2011
    "yes because the gas from cars is pollting the air"
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  • +26 +100 -74 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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    • +2 +6 -4 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."
    • +1 +4 -3 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 ."
    • -1 +10 -11 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."
    • -4 +3 -7 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."
  • +8 +33 -25 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 +15 -15 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 +7 -8 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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  • -1 +7 -8 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 +7 -8 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 +9 -10 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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  • -1 +9 -10 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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  • -1 +9 -10 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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  • -1 +9 -10 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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  • -1 +6 -7 Bronn May. 1, 2014
    "Global warming is the cause for Antarctica to melt, it also changes our life style."
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  • -1 +16 -17 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???"
  • -1 +12 -13 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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    • 0 0 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."
  • -2 +3 -5 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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  • -2 +5 -7 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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  • -2 +52 -54 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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    • +1 +1 0 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 +2 -5 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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  • -3 +5 -8 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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  • -3 +6 -9 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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  • -3 +6 -9 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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  • -3 +9 -12 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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  • -3 +5 -8 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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  • -3 +9 -12 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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  • -3 +9 -12 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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  • -3 +8 -11 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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  • -3 +11 -14 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 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."
    • 0 0 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."
  • -3 +24 -27 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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  • -3 +16 -19 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."
  • -4 +24 -28 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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    • -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."
  • -4 +59 -63 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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  • -4 +59 -63 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 0 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."
    • +1 +1 0 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."
    • -5 +1 -6 ... 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."
  • -5 +15 -20 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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  • -5 +39 -44 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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    • 0 +1 -1 Larry Jan. 11, 2014
      "Like you?"
    • -2 +4 -6 Diana H. Jun. 16, 2012
      "You would be surprised."
  • -5 +62 -67 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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    • +7 +7 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."
    • +1 +4 -3 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 +8 -7 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."
    • 0 +1 -1 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 +3 -3 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 +3 -4 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."
    • -6 +5 -11 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."
  • -6 +11 -17 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."
  • -6 +11 -17 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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    • +2 +2 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."
    • -3 +1 -4 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."
  • -6 +14 -20 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."
  • -6 +37 -43 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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  • -6 +38 -44 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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  • -6 +28 -34 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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  • -7 +40 -47 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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    • +1 +3 -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 +1 -1 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."
    • -1 +3 -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?"
    • -3 0 -3 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."
  • -7 +26 -33 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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  • -7 +33 -40 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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  • -8 +40 -48 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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    • +1 +2 -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."
    • +1 +4 -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."
    • -2 +1 -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 +25 -33 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 +31 -39 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 +28 -36 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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  • -8 +25 -33 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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    • +3 +3 0 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."
    • +1 +1 0 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 +1 0 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."
    • 0 0 0 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 0 0 Isabel Apr. 15, 2013
      "I meant to say the plants produce Oxygen, not Carbon Dioxide. Sorry.:/"
    • -4 0 -4 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."
  • -8 +26 -34 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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  • -8 +29 -37 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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    • 0 0 0 fishtree May. 30, 2014
      "What proofs/facts? I agree with you, but you have no argument."
  • -9 +8 -17 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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    • 0 0 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."
  • -9 +8 -17 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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  • -9 +32 -41 @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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  • -9 +17 -26 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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  • -9 +28 -37 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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  • -10 +6 -16 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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  • -23 +24 -47 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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    • +7 +7 0 jonathan lopez Sep. 18, 2013
      "scientists didnt say the world was going to end, the aztecs did/ get it right. BOOM BOOM SKADOOSH"
    • +5 +10 -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."
    • +2 +3 -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."
    • -1 +3 -4 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."
    • -3 +1 -4 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."
  • -26 +15 -41 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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    • +3 +6 -3 daisey winthrope May. 17, 2012
      "not to be rude but dont you think its time for change then?"
    • -2 0 -2 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"
  • -33 +24 -57 JONATHAN WILLIAMS May. 8, 2012
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    • +11 +15 -4 daisey winthrope May. 17, 2012
      "you can say that while your swimming to burger king."
    • +1 +1 0 Gabe Apr. 7, 2014
      "your a joke"
    • 0 0 0 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."
    • -4 +1 -5 Isabel Nov. 20, 2013
      "If that happens, Daisey, I will PERSONALLY buy you a whopper."
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