Helgi Hjorleifsson, a firefighter, is a leader in a national experiment to steer rivers of lava away from important sites.

Kilauea volcano erupted Tuesday on Hawaii's Big Island, shooting lava fountains up to 1,000 feet high and sending ash and volcanic debris across nearby communities.

Kīlauea has erupted episodically within the summit caldera since Dec. 23, 2024. Episode 43 lava fountaining happened for just ...

Volcanic eruptions are significant geologic hazards. Underwater volcanoes are challenging to study, yet they play an integral role in marine geology and may cause destructive tsunamis that can ...

One of the most popular attractions on the Big Island, the park offers some of the best volcano viewing in the world.

FLAGSTAFF — Just 30 minutes from downtown Flagstaff, Sunset Crater Volcano National Monument offers a striking look at northern Arizona’s explosive past. The cinder cone, now standing over 8,000 feet ...

Since the 1970s, planetary geologists have known that volcanic features cover large swaths of Mars. Early Mariner 9 images ...

Elle Leontiev's image of Philip, a self-taught volcanologist who has lived on Mount Yasur his whole life, has won the ...

Scientists compare volcanic cones on Earth and Mars to explain how gas-rich magma forms scoria cones. Spacecraft observations and Earth analog sites provide evidence of similar eruptive processes.