And now, thanks to a study published in the journal Nature Climate Change (full study available at this link), we know exactly how many people are out there taking money from dirty energy interests to try and confuse Americans about climate changeto derail overdue action and protect the fossil fuel industries’ profits.

Justin Farrell, a professor of sociology at Yale’s School of Forestry & Environmental Studies and the author of the report, studied both the institutional and social network structure of the climate denier movement and found that there are some 4,556 individuals with ties to 164 organizations that are involved in pushing anti-climate science views on the public.

“The individuals in this bipartite network include interlocking board members, as well as many more informal and overlapping social, political, economic and scientific ties,” Farrell wrote in the report. “The organizations include a complex network of think tanks, foundations, public relations firms, trade associations, and ad hoc groups.”

Farrell notes that while funding from ExxonMobil and the Koch family foundations have notoriously played a part in building the climate denial movement, there was very little empirical evidence demonstrating exactly how much influence these corporate benefactors had on the actual output of climate deniers and, in turn, how much they affected what politicians and other decisionmakers were saying about climate change.

So Farrell studied all of the written and verbal texts relating to climate change produced between 1993 and 2013 by climate denial organizations (40,785 documents comprising nearly 40 million words), as well as any mention of global warming and climate science by three major news channels (14,943 documents), every US president (1,930 documents) and the US Congress (7,786 documents).

…click on the above link to read the rest of the article…