Thu, Oct 23, 2014 at 11:37 AM
The new study has led state officials to revise evacuation maps for some Hawaiian residents.
Mon, Oct 20, 2014 at 9:30 AM
A vivid new video follows skiers in LED-studded suits as they slice up Alaskan slopes after dark.
Tue, Oct 07, 2014 at 10:05 AM
Mount Churchill ejected just 12 cubic miles of ash, but this ash spread for miles, leading scientists to reconsider the potential effects of even minor eruptions.
Thu, Oct 02, 2014 at 11:59 AM
With no sea ice to rest on, walruses have flocked onto a barrier island, putting themselves at risk of a deadly stampede.
Wed, Aug 20, 2014 at 2:11 PM
In 'American Catch,' author Paul Greenberg explores the nation's complicated relationship with the fish that we put on our plates.
Thu, Jul 31, 2014 at 9:00 AM
Located on nearly 19.3 million acres of tundra in the northeast corner of Alaska, this natural treasure is the largest and one of the most remote refuges in the United States. It's also one of the most threatened.
Wed, Jul 30, 2014 at 6:01 PM
Accessible only by boat or seaplane, the unique community might not be easy to get to, but its breathtaking views and abundance of wildlife will make your trip worth the effort.
Fri, Jul 18, 2014 at 3:48 PM
The mining project, one of the largest ever conceived, could hold $500 billion in gold and copper.
Fri, Jul 18, 2014 at 9:00 AM
The book, which is currently seeking a boost from an online fundraising campaign, features fabulous underwater photography by marine life advocate Richard Salas.
Fri, Jul 11, 2014 at 1:21 PM
The grizzlies at Katmai National Park are keeping rangers busy, and you can get in on the action by watching explore.org's cameras.