The Environmental Protection Agency will rescind the long-standing finding that greenhouse gas emissions endanger human health, as well as tailpipe emission standards for vehicles, setting off what it describes as the largest deregulatory action in U.S. history. Republican President Donald Trump's pick to run the EPA, Lee Zeldin, announced the agency's plan to rescind the "endangerment finding" on the Ruthless podcast on July 29, saying it will save Americans money and unravel two decades of regulation aimed at reducing carbon dioxide, methane and other greenhouse gases from cars, power plants, oil production and other sources.