Mars is home to the tallest mountain in the Solar System, Olympus Mons, an extinct volcano three times as tall as Mount Everest. There are several other examples of volcanoes and volcanic features ...

When volcanoes are preparing to erupt, scientists rely on typical signs to warn people living nearby: deformation of the ground and earthquakes, caused by underground chambers filling up with magma ...

One of the most deadly and dangerous volcano hazards isn’t lava. Mudflows called lahars can come without clear warning.

Volcanoes in Alaska, Washington state, Oregon and Hawaii have been rumbling and even spewing lava, enough to spark a swarm of news stories. But despite the jolts and temblors, geologists say there's ...

A mysterious and highly active undersea volcano off the Pacific Coast could erupt by the end of this year, scientists say. Nearly a mile deep and about 700 miles northwest of San Francisco, the ...

Add Yahoo as a preferred source to see more of our stories on Google. Taftan Volcano Summit (3941m), Sistan and Baluchestan province, Iran. (CREDIT: Wikimedia / Safa Daneshvar / CC BY-SA 4.0) For ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Taftan volcano in Iran ...

Of the five USGS volcano observatories, the Cascades Volcano Observatory is now the largest, with close to 80 permanent staff members focused on the Cascades and beyond. Many of them tasked with ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Things are heating ...