"EPA plans to quickly revamp its guidelines for evaluating whether environmental contaminants can cause cancer or other ailments, a move Trump administration critics fear is part of a broader effort to weaken the basis for regulating a wide range of pollutants."

"President Trump has rolled back environmental regulations, pulled the United States out of the Paris climate accord, brushed aside dire predictions about the effects of climate change, and turned the term “global warming” into a punch line rather than a prognosis. Now, after two years spent unraveling the policies of his predecessors, Mr. Trump and his political appointees are launching a new assault."

"Newly released emails show that Environmental Protection Agency scientists raised strong objections to a 2018 decision by Scott Pruitt, who was head of the agency at the time, to exempt most of southeastern Wisconsin from federal limits on smog."

"If you had a choice between a better, faster cell phone signal and an accurate weather forecast, which would you pick? That’s the question facing federal officials as they decide whether to auction off more of the wireless spectrum or heed meteorologists who say that such a move could throw US weather forecasting into chaos."

"In early 2016, the US Environmental Protection Agency set an immediate goal to reduce the number of animals used to test the toxicity of pesticides. The agency claims that it is making significant progress toward meeting that goal, but manufacturers are still using tens of thousands of laboratory animals each year to demonstrate that new pesticides entering the US marketplace meet safety standards."

"Rogue emissions of a gas that harms the ozone layer are coming from eastern China, primarily from two heavily industrialized provinces, an international team of researchers said Wednesday."

"The Environmental Protection Agency plans to change the way it calculates the health risks of air pollution, a shift that would make it easier to roll back a key climate change rule because it would result in far fewer predicted deaths from pollution, according to five people with knowledge of the agency’s plans."

"Despite repeatedly expressing public support for children's health, EPA is ending funding for a network of research centers focused on environmental threats to kids, imperiling several long-running studies of pollutants' effects on child development."