New painkillers from tarantula venom?

A protein from the venom of the Peruvian green velvet tarantula blunts activity in pain-transmitting neurons, says a new Yale University study.

View from space: Watch winter storm move across US

NASA video of satellite imagery shows three days of movement of a massive winter storm that stretches from the southern U.S. to the northeast.

Fossils reveal earliest known live birth

The fossil embryos of three little ichthyosaurs are preserved within the body of their mother that died while giving birth, 248 million years ago.

Crocodiles climb trees

A new study finds that crocodiles climb trees. If you don't believe it, here's a photo.

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.