Despite the claims of industry and the illusion of debate in the popular media, the facts are clear: human activity is contributing to global warming, and in a significant way.
Science Magazine analyzed 928 peer-reviewed articles about global warming, published between 1993-2003, and found that not one disagreed with the consensus position that humans bear responsibility for climate change. Not one.
From the article:
The 928 papers were divided into six categories: explicit endorsement of the consensus position, evaluation of impacts, mitigation proposals, methods, paleoclimate analysis, and rejection of the consensus position. Of all the papers, 75% fell into the first three categories, either explicitly or implicitly accepting the consensus view; 25% dealt with methods or paleoclimate, taking no position on current anthropogenic climate change. Remarkably, none of the papers disagreed with the consensus position.
The question of what to do about climate change is also still open. But there is a scientific consensus on the reality of anthropogenic climate change. Climate scientists have repeatedly tried to make this clear. It is time for the rest of us to listen.
And, if you haven’t seen the Competitive Enterprise Institute’s ad about CO2, go check it out. It is one of the most unintentionally funny things I have seen in a long time.