Scientists have coaxed back to life moss that had been frozen on an Antarctic island for more than 15 centuries.
An Antarctic iceberg the size of Singapore is drifting near the coast of West Antarctica, a potential hazard to ships.
Named for the hairy-chested actor David Hasselhoff, the Hoff crab is now thought to have originated in the Pacific Ocean. Today it is threatened by global warming, say scientists.
A firsthand look at the effects of climate change near the South Pole.