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The Biden-era limits were designed to reduce emissions of toxic pollutants, including a cancer-causing ingredient used in antifreeze and plastics.
Read MoreMommy, a Western Santa Cruz tortoise, recently welcomed four hatchlings at the Philadelphia Zoo, where she has lived since 1932.
Read MoreAfter years of NASA and private crews returning to Earth near Florida, the company shifted its landing zone to the West Coast for the private Fram2 mission.
Read MoreAdministration officials reversed a decision made during the Biden presidency that would have given millions of people access to weight-loss drugs paid for Medicare and Medicaid.
Read MoreThe 6,500-year-old weapons, found in a cave near Marfa, could be among the oldest near-complete set of wood and stone hunting tools found in North America.
Read MoreNew research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct.
Read MoreBorn into rural poverty, he climbed to the top of the art market. But he fell after being convicted of selling fake and stolen items.
Read MoreShe used her wealth strategically to expand opportunities for women, underwriting the development of the pill and supporting the suffrage movement.
Read MoreIt wasn’t the size of human brains that distinguished people from apes, he theorized, but the way they were organized. He found a creative way to prove it.
Read MoreThe facility, in Colstrip, Mont., used a new E.P.A. system for requesting special waivers from President Trump.
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