This is worth a watch, in case you didn’t catch Obama speak on Climate Change last summer, from Georgetown University.
The evidence of man-made climate-change is conclusive. The pie-chart below represents geochemist James Lawrence Powell’s review of 2,258 peer-reviewed scientific articles about climate change, written by 9,136 authors, published between Nov. 12, 2012 and December 31, 2013. Of all those hundreds of papers and thousands of researchers, Powell found one article, authored by a single scientist, that attributed climate change to something other than human actions: “The Role of Solar Activity in Global Warming,” by S.V. Avakyan, appearing in the Herald of the Russian Academy of Science, Vol. 83, No. 3.
Looks pretty similar to Powell’s earlier survey of peer-reviewed studies published between 1991 and Nov. 12, 2013, which resulted in this pie chart:
Infographics and reporting via Popular Science