Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help ...

Rivers of lava flowed down several vents of the Halemaʻumaʻu crater on Hawaii's Kilauea volcano overnight Monday — the latest ...

As the Maunaulu eruption waned, Kilauea summit inflated and two brief eruptions occurred in the latter half of 1971 — one in ...

An earthquake swarm 35 miles (55 kilometers) beneath Kilauea in August 1959 was followed in October by ground swelling ...

In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world's most active and whose eruption could affect millions of people. Its mission: figure ...

The long-dormant volcanic system returned to life – and this pro photographer captured one of Iceland's most dramatic ...

VOLCANO, Hawaii — Those of us who were born and raised in Hawaii have no doubt seen Kilauea volcano's eruptions for over 40 years. After its continuous eruption episode that started in 1983 ended in ...

This eerie satellite photo shows a "devilish" Russian volcano spewing out a 1,000-mile-long river of smoke into Earth's atmosphere. It is a striking reminder of the volcanic power trapped within the ...

Guides who take tourists to enjoy the striking views of Sicily’s Mount Etna are up in arms over tougher restrictions imposed ...