SUPERCONTINENT SUPERPUZZLE Supercontinents come and go over the ages. Amasia, illustrated here from the North Pole, might form in the distant future.
Nicolle Rager Fuller
A 100-meter-wide, kilometers-long rift in Antarctica’s Larsen C ice shelf, shown in this image from Nov. 10, 2016, could soon break off a 5,000-square-kilometer chunk of ice into the ocean, scientists warn.
CONVEYOR BELT Rising temperatures could shut down the Atlantic Ocean current (depicted here) that helps warm northwestern Europe, a new simulation shows.