BEIJING (Reuters) - An almost complete human skull fossil that could date back 100,000 years has been unearthed in China, state media said on Wednesday, hailing it as the greatest discovery since Peking Man.

Forty years ago, Harold Hay came up with a way to heat and cool homes using water and the sun. At 98, he's still trying to get the world to notice.

A new plan by Facebook Inc. that would attach advertisements to names and photos of users who like the products may be illegal under a privacy law, the New York Times reported Friday.

Large amounts of solar-thermal electric supply may become a reality if steam storage technology works--and new transmission infrastructure is built

Robert Hefner says natural gas offers a bridge to a squeaky-clean 'hydrogen economy.' An economy powered by hydrogen gas released from seawater by electrical current, produced by solar or wind generation.

The shuttle returned after 12 days, during which time the microbes had altered the way they express 167 genes. The team found that these space-mutated bugs were almost 3 times as likely to kill infected mice compared with their ground-grown counterparts.

Computer models provide specs for 14 different planet types!!

A research team led by professor Masayuki Sumida at Hiroshima University's Institute for Amphibian Biology has created a type of transparent frog whose internal organs are visible through its skin.

It sounds like the plot for a scary B-movie: Germs go into space on a rocket and come back stronger and deadlier than ever. Except, it really happened. The germ: Salmonella, best known as a culprit of food poisoning. The trip: Space Shuttle STS-1

An orbiting spacecraft has found evidence of what look like seven caves on the slopes of a Martian volcano, the space agency NASA said on Friday. The Mars Odyssey spacecraft has sent back images of very dark, nearly circular features...