The term 'lahar' refers to a deluge of water, volcanic material and other debris which has been swept along.

Oregon’s Three Sisters volcano complex is showing signs of increased activity as magma moves beneath the surface, raising concerns about potential volcanic eruptions. This video provides the latest ...

China is going full Jules Verne as it prepares to go where no drill has gone before. As part of its Deep Ocean Drilling ...

A 346-million-year-old fossil is rewriting the story of vertebrate evolution.

In 1669, in what has been considered the volcano's worst known eruption, lava buried a swath of Catania, about 15 miles away ...

Halfway between the neon jungle of Las Vegas and the casino clamor of Reno sits a Nevada town that feels like it exists in its own time zone—one where the clock ticks a little slower and nobody seems ...

Halfway between the neon jungle of Las Vegas and the casino clamor of Reno sits a Nevada treasure that feels like it was preserved in a time capsule, dusted with desert magic, and placed back on the ...

A 6.3 magnitude earthquake struck central Colombia early Sunday, authorities said. No casualties were immediately reported. The quake hit 17 kilometers (10.5 miles) northeast of ...