DEM

Iceberg Grinds to a Stop off South Georgia Island

Antarctic iceberg A-23A has slowed its drift and appears stuck in the shallow waters off the British overseas territory.

Sizing Up a Greenland Tsunami

Satellite data show the shape of a wave as water sloshed around Dickson Fjord after a rockslide triggered a tsunami…

Tahiti’s Heavy Waves

The waves off the coast of Teahupo’o can heave a crushing amount of water toward the shore and onto unlucky…

The Large Footprint of Small-Scale Mining in Ghana

In the past decade, unregulated artisanal mines accounted for more deforestation than industrial mines.

A New Park for West Virginia

One of the oldest rivers in the world is famous for its extreme sports and hunting.

Iceberg Goes With the Flow

The swerving path of Antarctic iceberg A-68A is dictated by a large and powerful current.

Iceberg Closes In on South Georgia

Antarctic iceberg A-68A has drifted menacingly close to a remote island in the southern Atlantic Ocean.

The River of No Return

The Salmon River in Idaho, one of the longest free-flowing rivers in the United States, rushes through a geologic wonderland…

Virginia’s Volcanic Past

A small volcano erupted in the Shenandoah Valley 48 million years ago.