Beneath Alaska’s breathtaking landscapes and pristine wilderness lies one of the most geologically active regions on the ...

Since its founding on August 25, 1916, the U.S. National Park Service has assembled 419 protected units, of which 62 hold the ...

If it erupted today, it's thought Yellowstone in the northwestern United States could cause a prolonged nuclear winter and ...

Ash from the 1912 Novarupta eruption periodically hits the west side of Kodiak Island, Larsen Bay and Karluk, roughly 65 ...