Updated: 55 min 50 sec ago
The U.S. and other countries take steps to make new refrigerators and air conditioners less harmful to the planet.
The Myanmar Jerdon's babbler was thought to have gone the way of the dodo—until scientists stumbled across it during a 2014 expedition.
Watch fishermen in Pennsylvania catch a red-breasted merganser.
Ringling Bros. and Barnum & Bailey has long been under fire for its treatment of elephants.
Astronomers are watching a strange supernova explode nine billion light-years away.
A dwarf star is en route to intergalactic space at millions of miles an hour—and its origin could have cosmic implications.
Planetary scientists have figured out how much water filled a Martian sea four billion years ago—and it was a lot.
Female killer whales that live long past their "childbearing" days may be wise matriarchs that help their groups survive, a new study claims.
Chemicals that mimic estrogen and other hormones are costing the EU $175 billion per year in health care, according to new research.
New study shows Los Angeles-area kids have fewer breathing problems now than they did in the 1990s.
Rising temperatures and declining snowpack in the mountains mean that the drought across the western U.S. is about to get even worse.
The discovery of a jawbone, along with a reconstruction of another fossil, shed light on the mysterious million-year period when the genus Homo first evolved.
A lack of snow on the Tibetan Plateau is pushing thirsty yak females into steeper habitat, a new study says.
With the help of wolf dogs, early humans out-hunted—and outlasted—Neanderthals.
A once-in-a-lifetime photo shows what happens when a weasel attacks a woodpecker—and gets more than it bargained for.
In observance of the World Wildlife Day's mission of highlighting wildlife crimes, here are some of the animals that fall prey to people's thirst for trophies and exotic cures.
Pakistani health workers-many of them women—continue to face Taliban bullets and bombs in their quest to inoculate children.
A Norwegian research vessel will spend six months on the sea ice to study the changing Arctic.
Geneticists have uncovered evidence of a westward migration in Europe about 4,500 years ago—and that may explain a long-standing mystery about language.
The Earth's heat could power homes and businesses worldwide, but it's barely been tapped. Indonesia is trying to change that.