By reconstructing a 700,000-year history of Methana volcano, geologists found a prehistoric phase when it appeared inactive on the surface, despite magma building up below ground ...

The 1980 eruption cycle made Mount St. Helens one of the most famous and now best-monitored volcanoes in the Cascades. But it is far from the only volcano in the range. From southern British Columbia ...

Tiny crystals suggest extinct volcanoes could still grow underground, a finding that could reshape how scientists assess eruption risk.

(photoz/Canva) 'Extinct' volcanoes that haven't erupted for tens of thousands of years may not actually be inactive, but silently accumulating huge reservoirs of magma to fuel future outbursts. This ...

Since 2000, specialists at the National Museum of Natural History have produced the world’s foremost report on active volcanoes Sally Sennert Did you know that there are between 40 and 50 volcanoes ...

The Alaska Volcano Observatory raised Kupreanof Volcano's alert level to Advisory and its aviation color code to Yellow on ...

Emily Schwing: In 1912 a volcano in Alaska more than blew its top. Known as Novarupta, it was responsible for the most powerful volcanic eruption of the 20th century. Kristi Wallace: The reason we ...

It’s easy to forget that the earth below us is always changing and shifting — but sometimes, we get a dramatic demonstration of exactly that, like with the recent eruptions of a volcano in Iceland.

While volcanoes have brought profound changes to landscapes here on Earth, volcanic activity on other planets and moons has followed a different path. It's easy to imagine space volcanoes as even more ...

HONOLULU (KHON2) — The summit of Mauna Kea on the Hawaiʻi Island hosts the world’s largest astronomical observatory for optical, infrared and submillimeter astronomy. But Mauna Kea has a much more ...