More than 400 racehorses—many of them in perfect health—are "destroyed" each year in the U.S. territory, where keeping losing or injured horses can be costly. Warning: graphic imagery.

See "Fusion Man" fly via a jet-powered wing on his back, a giant beetle escape a smuggler, volcanic ash falling eerily, and more.

Using a rope treadmill, researchers have revealed that tiny species use no more energy climbing vertically than they do walking on the ground, a find that bolsters theories about the earliest primates.

Two amateur videos taken in Chengdu, China—near the epicenter of Monday's devastating earthquake—show people running in panic as the ground shakes.

Dangerous skull surgery was commonly and successfully performed among the Inca, likely as a treatment for head injuries suffered during combat, a new study finds.

Poisonous chemicals trapped for decades in ice are now seeping into the polar ecosystem via glacial meltwater, researchers report.

Among the unusual finds are a possible victim of human sacrifice and a skeleton with curiously curved bones, anthropologists report.

Tens of thousands of pets and farm animals were trapped as their owners evacuated. Cattle are dying, and pets have no food, but a limited animal evacuation is in the works.

Buddhist monks and Myanmar (Burma) government workers began cleaning the cyclone-struck city of Yangon (Rangoon). But the situation remains grim in the country's delta region. Warning: graphic imagery.

Lost families and lack of aid figure prominently in emotional eyewitness testimony from Myanmar (Burma), where Cyclone Nargis may have killed a hundred thousand people.

Doctors in Australia believe the bionic eye they've created is safer than similar devices developed in other countries.

As new video emerges from Myanmar (Burma), the devastation from the weekend's cyclone becomes clearer, and the death toll rises.

Several hippos and at least four lions in the Masai Mara National Reserve have died after accidentally ingesting a powerful insecticide, conservationists say.

A rare genetic mutation gave the ancient pharaoh Akhenaten an unusually feminine physique, according to a Yale University physician.

Remains exhumed last year belong to two children of Tsar Nicholas II, may put to rest questions about what happened to Russia's last royal family, an official said.