Japan's Sakurajima volcano in Kagoshima erupted on Thursday, sending a towering column of ash nearly two miles into the sky.

Researchers are watching the most active volcano in the Pacific Northwest and now say that the volcano is swelling up like a balloon full of lava.

The volcano is thousands of feet below the ocean’s surface, so it poses no danger to people. But under all that water, a ...

This was the start of the dream of KMT: The Krafla Magma Testbed, named for the volcanic system in Iceland. It’s a dream that ...