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We all know that volcanoes are figuratively cool, but sometimes it can be a challenge to convey the concept of just how hot they can get.

Volcanic hazards can be awe-inspiring displays of the Earth’s power, but each has the potential to threaten lives and infrastructure, as well as...

"An avalanche of mud...covering the countryside like a tidal wave."

Just as people have many ways to describe the world around them, scientists can also come up with multiple words for similar things. Take "ignimbrite"...

How did Paoha Island in the Mono Lake Volcanic Field get its name? It didn't just spring up from nowhere...but it is related to hot springs!

A short earthquake swarm in the southern part of the Lassen Volcanic Center reminds us that volcanoes can shake, rattle, and roll even when they're...

There are a couple of ways to make a volcano shorter: it could have an eruption or a debris avalanche, or it could simply erode over time. Or, it...

Measuring the temperature of lava erupting on the Earth’s surface is possible with the right equipment. But how do you figure out the temperature of...

While California has plenty of active volcanoes, it also has a rich history of volcanism preserved in its Franciscan Complex rocks.

We recently received a question about how mud volcanoes form and why they're distinct from "real" volcanoes (the kind involving magma), so we're here...