- Pro to the question "Is Human Activity Primarily Responsible for Global Climate Change?"
“Multiple lines of independent evidence confirm that human activities are the primary cause of the global warming of the past 50 years. The burning of coal, oil, and gas, and clearing of forests have increased the concentration of carbon dioxide in the atmosphere by more than 40% since the Industrial Revolution, and it has been known for almost two centuries that this carbon dioxide traps heat. Methane and nitrous oxide emissions from agriculture and other human activities add to the atmospheric burden of heat-trapping gases. Data show that natural factors like the sun and volcanoes cannot have caused the warming observed over the past 50 years. Sensors on satellites have measured the sun’s output with great accuracy and found no overall increase during the past half century. Large volcanic eruptions during this period, such as Mount Pinatubo in 1991, have exerted a short-term cooling influence. In fact, if not for human activities, global climate would actually have cooled slightly over the past 50 years.”
“US National Climate Assessment,” nca2014.globalchange.gov, May 2014
- Theoretical Expertise Ranking:
Individuals and organizations that do not fit into the other star categories.
“The U.S. Global Change Research Program is a confederation of the research arms of 13 Federal departments and agencies, which carry out research and develop and maintain capabilities that support the Nation’s response to global change.”
“Organization & Leadership,” globalchange.gov (accessed Mar. 19, 2015)
“To build a knowledge base that informs human responses to climate and global change through coordinated and integrated Federal programs of research, education, communication, and decision support.”
“Vision, Mission, & Strategic Plan,” globalchange.gov (accessed Mar. 19, 2015)
- Federal government program
- Quoted in:
- Pro & Con Quotes: Is Human Activity Primarily Responsible for Global Climate Change?