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"The megalodon went extinct 3.6 million years ago, and is thought to be the largest shark that ever swam the Earth. But there's debate over what it looked like."

"White attackers turned a lush, high desert oasis in eastern Nevada, with its bubbling springs and a rare stand of Rocky Mountain junipers, into killing fields. They massacred hundreds of Native people there in the 1800s — a horrific history once retold in hushed tones behind closed doors."

"Suriname’s Saamaka Maroons still grow rice from seeds an ancestor escaping from a plantation carried in her hair. Now a gene bank seeks to widen use of the rare species to help fight the climate crisis".

"With confirmed or suspected cases in two Antarctic penguin species, researchers fear highly contagious virus could rip through colonies".

"Chemours and state regulators say the Fayetteville Works plant has reduced air emissions, but we found levels of 'forever chemicals' as much as 30 times higher than state tests".

"Ad campaigns from controversial quasi-government programs for pork, dairy, and beef are raising new questions around the checkoff program’s foray into social media."

"A Colorado environmental group is asking a federal judge to strike down a $2 billion plan that would reroute river water to the state’s expanding northern communities."

"A federal worker safety enforcement directive for refineries, chemical plants, and other facilities with large amounts of chemicals has received an overhaul for the first time in 30 years."

"Nine species could soon find themselves on federal threatened or endangered species list, the U.S. Fish and Wildlife Service says."

"The Department of Energy unveiled a heavily anticipated, scaled-back regulation Monday to cut greenhouse gas emissions from stovetop cooking in the U.S., going with a compromise that pleased gas stove producers and environmentalists alike."