The U.S. government is tightening the amount of ozone—a main ingredient of smog—allowed in the air, but not by as much as scientists recommended.

Humans are about to become a majority urban species for the first time. Does this trend mean poverty or prosperity for the world's urban dwellers?

The powerful repellant temporarily jams an insect's sense of smell so that people don't register as food, according to a new study.

A drug-dispensing robot is filling many of the prescriptions at Bumrungrad International Hospital in Bangkok, Thailand. Makers say the machine is more reliable than humans.

More than a hundred gharials found dead since December in an Indian river sanctuary likely died after eating fish carrying industrial chemicals, officials announced.

A large hole in the skull of an 1,800-year-old skeleton found in Greece is believed to be rare evidence of ancient—and failed—brain surgery.

Pollution drifting up from populated areas threatens polar bears in their formerly pristine Arctic habitat, according to Norwegian researchers.

A massage therapist in India claims she can relieve the stress of overworked elephants through massage.

The Kashmir city of Srinagar is using strychnine to poison the dogs. It's part of an anti-rabies effort that local animal rights activists oppose.

A new computer program can predict what a person is seeing based on brain activity, a study reveals—opening the door for useful but controversial "brain scanning" technology.

The Japanese government claims whalers were injured by activists hurling butyric acid produced by rotting butter. Video of the alleged incident hasn't been independently authenticated.

A big quake rocks Britain, the New York Philharmonic entertains North Korea, a galaxy is ablaze with new stars, and more.

A three-year-old green sea turtle in Texas is likely the first sea turtle to be fitted with a prosthetic flipper.

Canals feeding water from the Yellow River into the capital city are precursors to China's "master plan" to create human-carved rivers that will bring water into the arid north, officials say.

The futuristic entrance to the seed bank leads deep into a frozen mountain, where millions of seeds should be safe from war, warming, and other disasters.