Of the climate scientists who actively publish research, 97 percent agree that humans cause climate change. The U.N. Intergovernmental Panel on Climate Change — which draws on the knowledge of almost 800 climate experts across the globe — says it is at least 95 percent likely that human activities are the main cause of atmospheric and ocean warming since the 1950s.
In the scientific world, a 97 percent rate of agreement does amount to a consensus. No scientific issue is 100 percent certain; Indeed, there are similarly small percentages of researchers who think the HIV virus does not cause AIDS, and that smoking cigarettes does not cause cancer.
http://thinkprogress.org/climate/2015/05/21/3661573/jeb-bush-climate-change-intellectual-arrogance/
In the scientific world, a 97 percent rate of agreement does amount to a consensus. No scientific issue is 100 percent certain; Indeed, there are similarly small percentages of researchers who think the HIV virus does not cause AIDS, and that smoking cigarettes does not cause cancer.
http://thinkprogress.org/climate/2015/05/21/3661573/jeb-bush-climate-change-intellectual-arrogance/
