Climate Denial, Rebranded
THE CLAIM: The Hill article (2020) reported that the Trump administration's EPA intended to repeal the 2009 endangerment finding, a foundational document that legally obliged the agency to regulate greenhouse gases under the Clean Air Act. The stated justification revolved around questioning the scientific basis of climate change and 'revisiting' previous conclusions, despite overwhelming
consensus. THE EVIDENCE: The EPA's 2009 'Endangerment Finding' concluded that six key greenhouse gases (carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride) endanger public health and welfare. This finding was based on an exhaustive review of scientific literature, including reports from the Intergovernmental Panel on Climate Change (IPCC) and the
U.S. Global Change Research Program. This wasn't a casual declaration but a formal, legally robust judgment built on peer-reviewed science that survived multiple legal challenges, including a Supreme Court review (Massachusetts v. EPA, 2007) that affirmed the EPA’s authority and obligation to regulate greenhouse gases if it found them to be pollutants. THE CONTRADICTIONS: The premise for
revisiting this finding—new scientific evidence contradicting prior conclusions—is absent. Since 2009, the scientific evidence for anthropogenic climate change and its risks has only strengthened. For instance, the IPCC's Fifth Assessment Report (2014) and Sixth Assessment Report (2021) have unequivocally reinforced the scientific consensus, with the latter stating 'unequivocal' human influence on