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Surgeons transplanted a kidney and thymus gland from a gene-edited pig into a 54-year-old woman in an attempt to extend her life. It's the latest experimental use of animal organs in humans.
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Released on Earth Day, the federal government's new "HeatRisk" tool can help people assess when heat goes from uncomfortable to dangerous.
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Artificial wombs could someday save babies born very prematurely. Even though the experimental technology is still in animal tests, there are mounting questions about its eventual use with humans.
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The Environmental Protection Agency tightens standards for air pollution coming from more than 200 chemical plants in the U.S.
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A U.S. Fish and Wildlife Service proposal to kill some 470,000 owls over 30 years to protect other owl species has prompted conservationists and animal welfare advocates to weigh the consequences.
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Maynor Suazo Sandoval left Honduras when he was 20 and built a new life in the U.S. He is one of the missing workers from the collapsed Francis Scott Key Bridge.
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A new report by Children and Screens rounds up the changes spurred by the U.K.'s Age Appropriate Design Code, which went into effect in 2020. Similar laws are being considered in the U.S.
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Later this spring, 158 of the cherry blossom trees will be cut down as part of a project to rebuild and raise the seawalls around the Tidal Basin.
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Imagine everything you need—shops, parks, schools, and more—is within walking or biking distance of your home. Urban planner Jeff Speck is bringing a walkable lifestyle to cities across the U.S.
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Cicadas pee in jets — and why and how they do it could help scientists better understand microfluidics and advance all kinds of technologies, from 3D printing to drug delivery.
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Voting concludes in Illinois' presidential and U.S. House primaries. President Biden and former President Donald Trump, the presumptive nominees are on their party's primary ballots.
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Voting concludes Tuesday in Florida's presidential primaries. President Biden and former President Donald Trump, the presumptive nominees, are on their party's primary ballots. Follow the results.