"An ancient, well-preserved tree that was alive the last time the Earth's magnetic poles flipped has helped scientists pin down more precise timing of that event, which occurred about 42,000 years ago."

"Humans are making Earth a broken and increasingly unlivable planet through climate change, biodiversity loss and pollution. So the world must make dramatic changes to society, economics and daily life, a new United Nations report says.

"When the Supreme Court returns from its winter recess, the justices will have an unusually heavy load of environmental cases to sift through — and potentially more to come."

"A coalition of 18 states, one county, and the nation’s three biggest cities sued the EPA on Tuesday in New York federal court over a final rule that restricts how science can be used in future agency rulemaking."

"Talk of global warming was out, and relations among the eight countries that make up the council, once a highly collaborative group and a steady force for climate action, became dysfunctional."

"The Trump administration has completed a review of plans to ease protections for a struggling bird species in seven states in the U.S. West, but there’s little time to put the relaxed rules for industry into action before President-elect Joe Biden takes office."

"Two Trump administration officials have been reassigned over the posting of debunked papers, with the imprimatur of the White House, that questioned the scientific consensus on climate change."

"Linda Zall is disclosing how she toiled anonymously within the intelligence agency to help scientists intensify their studies of a changing planet."