Stratospheric polar vortex changes still trigger brutal U.S. winter cold snaps and extreme weather despite a warming climate.

In recent years, scientists have raised alarms about the potential collapse of key ocean currents in the Atlantic, with ...

By trapping trillions of gallons of water behind nearly 7,000 dams since 1835, enough to fill the Grand Canyon twice, humans have redistributed the planet’s mass enough to cause a phenomenon known as ...