A new hypersensitive sensor that can remotely detect electrical impulses in cells may one day scan for extraterrestrial life or rogue cancer cells.

In the decade after the birth of the world's first cloned mammal, scientists have been busy copying animals from Asian oxen to pet pooches—while the debate over cloned humans rages on.

Gen. Colin Powell, Olympic speed skating champion Joey Cheek, and others marked the day by extolling "hope" among the displaced.

A San Diego, California, company says it has bred low-allergen cats and is now taking orders for the reportedly sneeze-free kitties.

Sensitive enough to detect the letters on a penny, a new film may give androids "feelings" and allow doctors to remotely sense invisible tumors.

As potential fathers age, their sperm deteriorates and is less likely to produce healthy babies—or any babies at all, experts find.

This is one funky chicken. Get a glimpse of a bizzare dance craze that is becoming all the rage in Abidjan nightclubs.

Lime and lemon juice could be potent weapons against AIDS in developing countries, a scientist says. But others argue that the treatment may be ineffective or harmful.

The armies of microbes in your digestive tract are so essential to survival that you're a super-organism, a new study says.

The toxic weed will grow (and grow and grow) even more poisonous as greenhouse gas levels rise, according to a new report.

For the first time, the chimp version of HIV has been found in the wild, scientists say. The find may link the origin of AIDS to a specific ape population.

Twelve thousand non-native lizards are treating the town of Boca Grande like their personal paradise. Fed-up residents may pay an "iguana tax" to banish the reptiles.

The two species' ancestors may have interbred and produced hybrid offspring, complicating and prolonging the evolutionary split, a new study says.

Who should get the limited vaccine in the event of a bird flu pandemic? A new study of bioethics flips the existing model on its head.

No one knows if a bird flu pandemic will occur, but the consequences could be enormous. Here's what you can do to protect yourself and your loved ones.