Updated: 41 min 8 sec ago
U.S. officials call for a crackdown on the illegal trade in wildlife, and for everyone to help.
Some beaches in the Gulf of Alaska still harbor oil from the Exxon Valdez spill. And it looks about the same as it did 25 years ago.
Michael Melford is celebrating an EPA decision that could stymie plans for a massive mine in the pristine region.
The discovery of Venezuela's oil goes back to the time of the conquistadors. And the debate over who should benefit from it goes back almost as far.
A groundswell of researchers, many of them African-American, are reaching back to a painful period to show the ways slaves and their descendants influenced American cuisine.
Using cutting-edge research tools, Stanford professor Barbara Block is unraveling the mysteries and revealing the marvels of bluefin tuna.
Arctic swimmer Lewis Pugh shares the science behind the polar plunge.
Auroras dance, a speedy star leaves a bow shock in its wake, and Martian dunes glimmer in this week's roundup of best space pictures.
Federal regulators invoked the Clean Water Act to put dumping mine waste in an Alaskan bay on hold.
Crimea has been a flashpoint between Russia and Ukraine for decades. Here's why.
Why do gamblers keep on trying when they’re down? A new study suggests that to the brain, a near win is nearly as satisfying as a jackpot.
An environmental review paves the way for seismic oil and gas exploration off the U.S. Atlantic coast. Some areas will be closed to air guns to protect marine mammals and turtles.
As unrest continues in Ukraine, pro-Russian forces cause further turmoil in Crimea at the southern tip of the country.
Uganda has followed Nigeria in passing tough new anti-homosexuality legislation. The West may be appalled, but the laws are popular at home.
Many patients and practitioners criticize the medical establishment for not doing enough about Lyme disease. Much remains unknown about the illness, and even mode of transmission has recently come into question.
A rare disease has struck five California children, paralyzing one or more limbs. Doctors are concerned—but not in a panic.
Frank Geminden, the boss of the Diamond S ditch, restores balance to Arizona's Verde River, in partnership with environmentalists and farmers.
Astronomers have witnessed outsize jets flowing out of a monster black hole, a new study says.
An extended layover in Beringia would help explain how the genome of Native Americans became distinct from that of their Asian ancestors.
Video cameras reveal some surprising behaviors of reef sharks off the coast of Hawaii.