NASA's first moon landing in more than 30 years will end with a bang, when a space probe launched in 2008 crashes into the moon's south pole to stir up signs of water ice.

A dead swan pulled from a Scottish harbor has tested positive for the deadly H5N1 strain of avian influenza. Experts stress that birds, not humans, are at risk.

The remote-controlled airplane-glider hybrid can find and ride air currents and may be used for flights on distant planets or spy missions on Earth.

Scientists have found that umbilical cord blood may be a new source of organ-growing stem cells. But experts disagree about the future of this potentially life-saving resource.

A disk of debris circling a pulsar 13,000 light-years from Earth sheds new light on how and where planets can form.

Find out how a National Geographic photo engineering team brought the meat-eating dinosaur's bone-crushing dinnertime to life.

Billions of years ago a giant space rock slammed into Mercury, leaving the planet less than half its previous size, according to new computer simulations.

In a medical first, doctors create working bladders from patients' own cells and successfully implant them in children and teens.

X-ray images of comet Tempel 1's collision with the Deep Impact space probe last year show that the comet released about 250,000 tons (226,800 metric tons) of water.

Scientists say the U.S. is prepared for a slow-growing flu virus in the event of an oubreak, but perhaps not one that spreads more quickly. Also: news on a preliminary bird-blu vaccine.

Ceramic superconducting wires lined with tiny dots might be the technological leap forward that makes yesterday's vision of the future a modern reality.

U.K. researchers have developed a series of robots that power up by digesting sugar, rotten apples, and dead flies. Coming soon: robot restrooms?

See the science of Star Trek come to life as the world's most advanced android waves for the camera.

Roughly the size of football fields, the moonlets may hold the secret to where the rings came from.

The air over Antarctica has warmed dramatically over the past 30 years, according to a new study—so dramatically that scientists are hard pressed to explain the spike in temperature.