Pahoehoe lava flow

Pahoehoe lava flow
Hawaii is well known to have been created from volcanic activity, and the geologic hotspot below the islands is the most studied in the More »

Understanding Volcanoes

Understanding Volcanoes

How do volcanoes work, and how accurate are predictions? How have volcanoes changed the landscape? More »

Volcano Overdue at Yellowstone?

Volcano Overdue at Yellowstone?

Giant volcano at Yellowstone erupts on schedule. The last eruption covered about 20 states with ash. If Yellowstone blows, think big! More »