Brulle’s research includes the strategy and funding patterns of what he calls “the climate change countermovement,” the movement critical of action to address global warming. Brulle was interviewed by Frontline, a public television program that produces and broadcasts in-depth documentaries, for their 2012 documentary on climate change denial titled Climate of Doubt. He described the climate change countermovement as "comprehensive" and as "an add-on to the already-existing conservative movement in the United States." Brulle estimated the total annual income of the nonprofitenvironmental movement as $2.7 billion, and noted that progress toward a cleaner US environment often comes at the expense of other nations, in a 2009 interview by the Imaginova Corporation published by Fox News. Brulle analysed the funding of organizations associated with the climate change denial movement during a year-long fellowship at the Center for Advanced Study in the Behavioral Sciences at Stanford University. Brulle published results in December 2013 in Climatic Change, a monthly peer-reviewed scientific journal. According to Brulle, it was "the first peer-reviewed, comprehensive analysis ever conducted of the funding behind climate change denial." Brulle's study estimated that the 91 organizations he examined had a total annual income of just above $900 million, and that the vast majority of funds donated to such organizations came from conservative foundations. Over the eight years covered by the study, the American Enterprise Institute received the most funding—16% of the total funds, and the donor-advised funds Donors Trust and Donors Capital Fund were the largest funders. The study also found that the amount of money donated to these organizations by means of Donors Trust and other foundations whose funding sources cannot be traced has risen dramatically over the previous five years. The report was covered by the Washington Post, Forbes, Scientific American, The Guardian, Science Daily, and the International Science Times. The research was featured in the public information website on climate change from the Governor of California's Office of Planning and Research. A senior fellow from the Heartland Institute, one of the organizations included in the study, writing in an opinion piece in Forbes, criticized Brulle's work and its media coverage on a number of points, including that the organizations included in the study had diverse agendas, and not all of their revenue was devoted to climate change education. Bruelle acknowledged in the PBS interview, “You can’t say how many dollars went from this foundation to this organization specifically for climate change....” Brulle collaborated on research into factors affecting US public opinion on climate change, and found that politicians are more influential than scientists. The research was featured by National Geographic and USA Today.
Political activity
Brulle endorsed Bernie Sanders in the 2016 U.S. presidential election.
Books
Agency, Democracy, and Nature: The U.S. Environmental Movement from a Critical Theory Perspective