Articles on Environment

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Rescuers searched for survivors after a flash flood in Texas Hill Country on July 4, 2025, that killed more than 130 people. Jim Vondruska/Getty Images

Why 2025 became the summer of flash flooding in America

Large parts of the central and eastern U.S. have seen at least 50% more precipitation than normal. An atmospheric scientist explains why and what creates flash flood weather.
Lionel Messi celebrates with fans after Argentina won the FIFA World Cup championship in 2022 in Qatar. Michael Regan-FIFA/FIFA via Getty Images

When big sports events expand, like FIFA’s 2026 World Cup matches across North America, their climate footprint expands too

Sports face a sustainability challenge: They’re under pressure to grow, but more travel means more emissions that add to rising global temperatures. The NCAA is also weighing expanding March Madness.
Photos after the Los Angeles fires in January 2025 show many yards where vegetation didn’t burn while neighboring houses did. AP Photo/Chris Pizzello

California plan to ban most plants within 5 feet of homes for wildfire safety overlooks some important truths about flammability

Hedges and trees may actually reduce home exposure to radiant heat and flying embers, but they must be well maintained. Two scientists who study how plants burn explain.
An electron microscope image, colorized, shows different structures of pollen grains, including sunflower, morning glory and primrose. Dartmouth Electron Microscope Facility

Ancient pollen reveals stories about Earth’s history, from the asteroid strike that killed the dinosaurs to the Mayan collapse

Palynologists who study tiny pollen fossils share 4 stories found in grains that fell hundreds to millions of years ago.

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