Scientists got their first up-close look at what's eating away part of Antarctica's Thwaites ice shelf, nicknamed the Doomsday Glacier because of its massive melt and sea rise potential.
Climate change is an everyday reality for students and teachers living in the Himalayan mountains of Nepal. At one school, they are trying to learn more about the forces that could upend their lives.
On mountaintop glaciers of Alaska, Washington and Oregon, billions of tiny black worms are tunneling upward to the barren, icy surface. What lures them, and how do they survive the frozen depths?