Huffington Post: The study, published Monday in the Proceedings of the National Academy of Sciences, reviewed 20 years of data starting in 1993 to show that climate change-denying groups and individuals who received money from Exxon Mobil and the Koch brothers began to unify their messages in 2007, amplifying supposed uncertainty surrounding the issue.
"They were writing things that were different from the contrarian organizations that did not receive corporate funding,' Yale University sociologist and lead study...