The book by Naomi Oreskes has been referred to in some comments recently. I also read it years ago, eye opening and shocking it was.
For all the attacks made on her, the evidence speaks for itself. It’s their own documents - they are what they are.
But if you want to understand the short version, Naomi has given a number of talks over the years, which I’d like to recommend.
Answering Climate Change Skeptics, Naomi Oreskes https://www.youtube.com/watch?v=XXyTpY0NCp0 Uploaded on Mar 3, 2010 | 1:14 min A presentation based off of her recent book, Merchants of Doubt: How a Handful of Scientists Obscure the Truth about Climate Change. Naomi Oreskes, author and professor of history and science studies, University of California, San Diego. From the University of Rhode Island's Spring 2010 Vetlesen Lecture Series, People and Planet Global Environmental Change. March 2, 2010.
UQx DENIAL101x 184.108.40.206 Full interview with Naomi Oreskes Published on Apr 27, 2015 https://www.youtube.com/watch?v=suz_13pXgEw Climate change is real, so why the controversy and debate? Learn to make sense of the science and to respond to climate change denial in Denial101x, a MOOC from UQx and edX. Denial101x isn’t just a climate MOOC; it’s a MOOC about how people think about climate change. http://edx.org/understanding-climate-denial
Naomi Oreskes: Why we should trust scientists https://www.youtube.com/watch?v=XXyTpY0NCp0 Published on Jun 25, 2014 | 20 min | TED Talk Many of the world's biggest problems require asking questions of scientists — but why should we believe what they say? Historian of science Naomi Oreskes thinks deeply about our relationship to belief and draws out three problems with common attitudes toward scientific inquiry — and gives her own reasoning for why we ought to trust science.