Advances in x-ray astronomy are helping to solve some enduring mysteries about black holes, scientists say.

Some scientists say that the same lunar tugging that causes Earth's tides may trigger earthquakes.

Flying whales, flesh-dissolving tadpoles, and other beasts abound in a National Geographic Channel special that asks, What would aliens really be like?

Californians can now check the Internet for their daily color-coded earthquake forecast.

At Russia's Pleistocene Park, scientists are re-creating an Ice Age landscape by reintroducing plants and animals that once thrived in the region.

A new family of mammals has been found roasted at a market in Laos. The specimens look like "spineless porcupines," one expert says.

The first flybys of Titan portray Saturn's largest moon as an icy, planet-like rock where the rain is methane and ice volcanoes may spew frozen "cryomagma."

Scientists have created a self-reproducing robot, a breakthrough they say could one day drive major advances in nanotechnology and space colonization.

To create the most lifelike reconstruction of Tutankhamun ever, forensic experts used technology straight out of CSI. (Includes photos.)

A new study shows how genes can help reveal how societal rules affect mobility.

Did ancient toxins in Tutankhamun's tomb cause the high-profile death that inspired fears of a legendary Egyptian curse?

First noticed by a black market fossil dealer, a new species found in a Utah boneyard may be a missing link in dinosaurs' trend toward vegetarianism.

Like Albert Einstein, British comic sci-fi author Douglas Adams sought a unified theory to explain the universe. Well, sort of. His answer, The Hitchhiker's Guide to the Galaxy, hit U.S. movie theaters this weekend.

Where did we come from? Emerging "intelligent design" theory may change the very definition of science by allowing the supernatural into the lab.

Digital imaging is shedding new light on ancient papyrus manuscripts, allowing researchers to piece together "lost" plays, poetry, Christian gospels, and even steamy novels.