The U.S. Environmental Protection Agency has announced the repeal of the “endangerment finding,” a scientific determination made in 2009 during Barack Obama’s administration, which empowered the EPA to regulate greenhouse gases. The rule classified carbon dioxide and five other greenhouse gases as a threat to public health. The endangerment finding underpinned regulations that set emissions standards for cars and light trucks, power plants, and oil and gas industry facilities. “This is about as big as it gets,” President Donald Trump said at the White House with EPA Administrator Lee Zeldin. Obama said in a social media post that the Trump administration’s action makes the U.S. “less safe, less healthy and less able to fight climate change – all so the fossil fuel industry can make even more money.”