Initially believed to be a cold, arid grassland, the stretch more resembled the modern-day Yukon-Kuskokwim floodplain.

Deep in Alaska’s Katmai National Park, a perfectly round, 1,600-foot-wide crater has puzzled scientists for decades. Known as ...

A new radar-based volcano monitoring system developed by the University of Alaska Fairbanks and U.S. Geological Survey will ...

The Savonoski Crater is a round hole in Alaska's Katmai National Park that has defied scientific explanation ever since it ...

Early numbers estimated the die-off to be between 500,000 and 1 million birds. Heather Renner, Alaska Maritime National ...

The president is calling for energy dominance, but aging shale plays aren't positioned to deliver a surge of new oil production.

Alaska, largely unspoiled wilderness, looks like something out of The Lord of the Rings.

Mount Spurr is part of the Ring of Fire, located in southern Alaska. The mountain is a stratovolcano, which means it has ...

Arctic glaciers are leaking significant amounts of methane, a potent greenhouse gas. Glacial melt rivers and groundwater springs are transporting large volumes of methane from beneath the ice to the ...

As climate change warms the Arctic, permafrost is thawing, and carbon trapped within the soil is moving into the atmosphere.