An autopsy on the cub, born at an Amsterdam zoo, showed the animal's windpipe filled with milk, indicating it had choked to death, officials report.

A tailless plane and a craft that sports engines on top of its wings were among the ultra-efficient designs that took top honors in the 2008 NASA Fundamental Aeronautics Student Competition.

Dead and dying fish have become a common sight in Yucatán waters, killed off by a rare but naturally occurring algal bloom known as red tide.

Rapid warming will cause more icebergs to break free, drift, and scour away practically all life on swaths of the seafloor, a new study says.

Animals and plants that can't escape climate change on their own should be relocated by humans, researchers say. But others argue it should only be a last resort.

The ghastly predators, which suck up earthworms like spaghetti, may have traveled to the United Kingdom as stowaways in plants from the Caucasus region.

The largest coral reef system in the southern Atlantic is twice as big as previously estimated, and it's teeming with life, experts announced.

At an artificial lake in Thailand, several of the world's largest and rarest freshwater fish lurk near anglers' baited hooks—and some conservationists couldn't be happier.

At a major aircraft trade show in England, recycling of plane parts is on the agenda—while in California, yesterday's 747 is tomorrow's house.

The "singing" sands of Dunhuang are no longer music to the ears of city residents, who face disappearing rivers, buried farms, dust-choked homes, and other ills.

Having mastered some of the world's most grating sounds—sirens, cell phone ringtones—a blackbird is irritating Britons with its powers of mimicry.

Explosions of magma about 93 million years ago sapped the oceans of oxygen, causing a mass extinction of marine life, a new study found.

The number of people seeking treatment for stings has been increasing in Alaska, especially in regions farther north than where insects such as wasps are common, a new report says.

Even with 28 million insect specimens in their collection, experts at London's Natural History Museum haven't found a match for a bug in their own backyard.

Dog-eating catfish and other rare species are drawing fishers to a sport lake outside Bangkok -- and some conservationists couldn't be happier. With video.