This video examines the fate of Ukrainian nuclear weapons following the collapse of the Soviet Union and the reasons behind ...

Researchers flew a helicopter over Hawaii's Kilauea volcano, capturing dramatic footage of its latest eruptive episode. Close ...

Lava fountains reached heights of more than 330 feet and feeding multiple lava streams. Scientists with the U.S. Geological Survey's Hawaiian Volcano Observatory said the fountains were likely to go ...

One of the world’s most active volcanoes, Kilauea on Hawaii’s Big Island, began spewing lava from the north vent Wednesday, the latest event in an ongoing eruption that began almost six months ago.

One of the world’s most active volcanoes, Kilauea on Hawaii’s Big Island, began spewing lava from the north vent Wednesday, ...

Kīlauea Volcano’s Halemaʻumaʻu crater began erupting again on Wednesday, with lava fountains reaching more than 1,000 feet in ...

In 1730, the ground began belching a morass of ash and lava across the island in a series of cataclysmic eruptions, covering almost a quarter of its entire area. Many villages had to be abandoned ...

The outward blast spread volcanic debris (gray in the images) over 230 square miles (600 square kilometers) and blew down 4 billion board-feet of timber. A raft of dead trees drifts around Spirit Lake ...