The US Environmental Protection Agency under President Donald Trump is pushing to reverse a 2009 landmark declaration that deemed CO2 and other greenhouse gases harmful to people's health. What's at stake?

Environmental Protection Agency Administrator Lee Zeldin was at an Indianapolis truck dealership on Tuesday, announcing rollbacks that will undo efforts to combat climate change taken during

On Tuesday, the Environmental Protection Agency—led by Administrator Lee Zeldin, a New Yorker—proposed canceling a measure that lets the government limit pollution linked to climate change. The move could undo many regulations that cut emissions from cars,