Strong earthquake in remote western China

The quake took place in China's sparsely populated region of Xinjiang. It's not yet known if it caused casualties or significant damage.

What killed the woolly mammoth? New clues.

Ten thousand years ago, large mammals of the Arctic, like the woolly mammoth, went extinct. What caused it? Climate change? Disease? Over-hunting by humans?

View from space: Sochi Winter Olympic sites

A satellite view of the skiing and snowboarding sites for the Sochi Winter Olympic Games.

Video: Will this go faster than light?

Light speed is the ultimate speed in our universe. Why we haven't been able to build - or even conceive of - a contraption that goes faster than light.

Catch-and-release fishing creates too much trauma for some sharks

When a shark swims away after being caught by a catch-and-release sport fisherman, that doesn't mean the shark will survive the encounter.

Curiosity rover sees Earth and moon from Mars

Earth is now an evening "star" as seen in the sky of Mars. A closer look reveals a double world.

Places to go: Maldives is the world’s lowest country

Not one of its 1,200 mostly uninhabited coral islands measure more than six feet (1.8 meters) above sea level.

MIT theorists predict new forms of exotic insulating materials

Topological insulators could exist in six new types not seen before. The results could help provide insights into quantum physics.

Death toll climbs to 16 since Mount Sinabung eruption

Thousands displaced from their homes. Disaster agencies still mobilizing medical and social services. A thin layer of ash expected to arrive in Malay Peninsula on Wednesday.

Dinosaur discovered in 2008 now known among largest land animals

Bone structure indicates that it was a juvenile, estimated to be 60 feet (18 meters) long. An adult would have been much larger.