Dozens of climate scientists say the Trump administration is relying on error-filled, selective research as it seeks to scrap the 2009 federal finding that greenhouse-gas emissions endanger public health. In an Associated Press survey, 53 of 64 experts gave failing marks to companion reports issued by the Environmental Protection Agency and the Department of Energy, citing misuse of wildfire and sea-ice data, unsubstantiated economic claims and repeated cherry-picking of studies. The DOE analysis, released in July, and the EPA proposal draw on each other while challenging mainstream projections of rising temperatures and climate damage. The administration has opened two public comment periods—ending Sept. 2 for the DOE report and Sept. 22 for the EPA proposal—before deciding whether to revoke the endangerment finding. Reversal would undercut rules that curb emissions from coal-fired power plants, methane-heavy oil and gas wells, and new cars slated to cut tail-pipe pollution roughly in half by 2032. Environmental groups have already begun filing court challenges. The scientific backlash comes as the administration broadens its campaign against climate regulations. On Aug. 25 the EPA moved to block California’s roadside emissions-testing program for heavy-duty trucks, arguing the state is overstepping federal authority. A day later, 23 Republican attorneys general urged Administrator Lee Zeldin to terminate EPA grants to the Environmental Law Institute’s Climate Judiciary Project, which they allege promotes partisan climate litigation. Together, the actions signal an aggressive push to roll back federal and state climate initiatives during President Donald Trump’s second term.