Four years ago, climate change was a hot issue and politicians from both sides seemed poised to act. Today public opinion on the climate issue has cooled considerably. Politicians either ignore it or proclaim their skepticism. What’s behind this massive reversal? FRONTLINE goes inside the organizations that fought the scientific establishment to shift the direction of the climate debate.

PBS Frontline explores the massive shift in public opinion on climate change. https://www.pbs.org/video/frontline-climate-doubt/