Collagen extracted from a 68-million-year-old thighbone shows that some ancient tissues can escape fossilization and offers an unprecedented link between dinos and modern birds.

Blue forests? Orange meadows? NASA scientists may be able to determine the colors of extraterrestrial plants while studying distant planets, new research shows.

It could be the "shocking" answer to a puzzle that has stumped astronomers for 45 years: What gives galaxy M106 a pair of "anomalous" spiral arms?

Like many humans, insects and plants are more likely to hitch flights to foreign destinations in June, July, and August, scientists say.

Just weeks after the world's first cloned wolves were announced by South Korean scientists, an investigation has been launched to verify the research.

For the first time, astronomers have detected water in the atmosphere of a planet outside our solar system, according to a new study.

Crisscrossed with gems up to 36 feet (11 meters) long, Mexico's Cave of Crystals looks like nothing so much as Superman's Fortress of Solitude.

The "Sistine Chapel of crystals" gained its nearly bus-length gems over millions of years of volcanic cooking in a rich watery mixture, a new study says.

Global warming threatens to extinguish millions of human lives and nearly a third of the planet's wildlife, an international panel of experts says.

The charred bones long believed to be remains of St. Joan of Arc don't belong to the French heroine but are instead fragments of an Egyptian mummy, a new study has shown.

Blood types A, B, and AB can be efficiently changed into type O, which is safe to give to anyone, say researchers who have discovered efficient new protein scissors.

Voters in one of New Mexico's poorest counties must make an unusual decision: whether to tax themselves to help build the world's largest spaceport.

A 3-D model of the Giza monument shows how builders might have used a spiraling ramp inside the structure to hoist millions of multi-ton stone blocks.

This week: Wolves cloned, mice given "human" vision, world's oldest perfume found, France releases UFO files, and more.

Since they (probably) can't use the Force, NASA scientists turned to a space telescope to reveal that planets not unlike Luke Skywalker's home world could form around binary stars.