Inside an incredibly bright cluster of galaxies, a long-dormant supermassive black hole has come back to life. Radio images ...

A supermassive black hole is reawakening inside a distant galaxy cluster—and after almost 100 million years of slumber, ...

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

The USGS has released dramatic footage as the Kilauea volcano erupts, forming rare 12 metre dome-shaped lava fountains.

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 ...

Following the eruption, one team had an idea to help recover from the devastation: send gophers on a day trip.

MOUNT ETNA, Italy (AP) — Guides who take tourists to enjoy the striking views of Sicily’s Mount Etna are up in arms over tougher restrictions imposed by local authorities after a round of eruptions at ...

POPOCATÉPETL VOLCANO, Mexico (AP) — 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 ...

It’s winter, and the SciFri team is already dreaming of warmer weather. How about a mind vacation to one of the hottest places on earth, an erupting volcano? Tamsin Mather has trekked to volcanoes in ...