About a decade ago, several of Greenland's biggest glaciers suddenly began melting. A decade later, two groups of scientists are trying to unlock the secrets behind a scientific mystery story with potentially big consequences for the future of the island's rapidly-melting ice sheet.
Before slamming into the Philippines, Typhoon Haiyan blew across the northern part of the Pacific island nation of Palau, wreaking havoc and elevating concerns about climate change.
A telescope trained on the farthest galaxies to study holes in the clouds of interstellar gas may help reveal the source of life in the universe.
A hidden culprit in the 2004 Indian Ocean tsunami was degraded shorelines. Now Indonesia's moving to protect its coasts by restoring thousands of miles of mangrove swamps.