Updated: 53 min 55 sec ago
Arctic's first human arrivals kept to themselves for thousands of years.
Mercury in the environment affects birds' brains and alters the songs that they sing.
This newest listing under the Endangered Species Act brings the total number of coral species protected under the act to 22.
Since age 10, Maritza Morales Casanova has been at the forefront of Mexico's conservation and education efforts.
In a physics first, quantum entanglement of two-colored laser beams created pictures of otherwise unseeable objects, experimenters report.
Christian groups in northern Iraq are newly determined to defend their ancient homeland.
Climate and ocean changes blamed for huge losses of puffins, kittiwakes, and terns.
Efforts to stop the illegal killing of African elephants should focus on ivory transshipment ports and personnel.
The last section of dam is being blasted from the Elwha River on Washington's Olympic Peninsula on Tuesday.
The world's existing power plants are locking in more than 300 billion tons of future emissions that aren't being accounted for, a new study says.
U.S. data centers throw away billions of dollars in electricity every year because of inefficiencies in how they are run, according to a new report.
As apex predators, ospreys get a mega-dose of contaminants—and help identify health threats.
Although Sunday's Napa shake-up was one of California's biggest in recent memory, the state has a history of far bigger geological rumblings.
Birds, the most watched nonhuman creatures on the planet, tip us off to threats to human health.
Two hundred years ago today British troops seized control of Washington, D.C., and set the White House on fire.
The moderate earthquake that struck California’s Napa Valley on Sunday collapsed older buildings, sparked fires and caused scores of injuries.
Earthquake "swarms" under a large Icelandic volcano point to magma moving beneath the island.
Summer’s almost gone, but beaches are forever.
A supernova shines, debris streaks across space, and stars wheel around a tower.
As another volcano rumbles in Iceland, author and reporter Alexandra Witze explores the nation’s long history of powerful eruptions.