High seas in the north Pacific may force the U.S. Navy to wait another day before launching a heat-seeking missile to destroy a wayward spy satellite.

High seas in the north Pacific may force the U.S. Navy to wait another day before launching a heat-seeking missile to destroy a wayward spy satellite.

Atlantis and its crew safely landed at Kennedy Space Center, after the successful delivery and installation of a new lab for the International Space Station.

Atlantis touched down in Florida Wednesday, wrapping up a five-million-mile journey.

Enigmatic corals that can live for at least 5,000 years may fill in large gaps in the evolutionary and climatic records, scientists say.

Swallowing handfuls of soil before or after eating certain leaves helps chimps in Uganda "self medicate" against the parasite that causes malaria, a new study suggests.

Giant sea spiders and other species are among thousands of creatures—a quarter of them previously unknown—found in the icy depths of the Southern Ocean.

Astronauts prepared the shuttle Atlantis for the ride home, wrapping up a two-week mission to add Europe's new orbital laboratory to the International Space Station.

Scientists working in Madagascar have found what may be the largest frog that ever lived—and it had an attitude to match, experts say.

More than half of the sunlike stars in our galaxy could have terrestrial planets with the potential for life, a new study says.

The Hollywood writers' strike may be over, but perhaps the best prime-time show in the Americas this Wednesday night will be in the sky: a total lunar eclipse.

Early Mars was probably a wet world but not a habitable one because of high concentrations of dissolved minerals, scientists have announced.

A new monkey debuted in a London "rain forest," a beagle bounded to glory in New York, Japanese children huddled in igloos, and more.

Retreating glaciers caused by global warming in the Swiss Alps are a reality. Now there's concern the warming could harm the small country's famed ski industry.

Astronauts installed a sun-monitoring device during the final space walk of the shuttle Atlantis's mission to deliver the Columbus lab to the Space Station.