Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. To get it in your inbox, sign up for free here. A mile and a half beneath the ocean’s surface, the ...

Deep beneath the popular tourist island of Tenerife lies Europe's longest volcanic cave, stretching an impressive 11 miles.

Through the intricate study of lava tubes -- caves formed following volcanic eruptions when lava cools down -- an international team of researchers has uncovered clues about Earth's ancient ...

Explore a wide variety of inspiring landscapes just outside of the city. The post Trekking Bend’s Fiery Past: 6 Volcanic ...

The cave that the Kanohina system seems poised to supplant in the record books is on the other side of the Big Island. It was likely created during a 15th-century eruption of a different volcano ...

Through the intricate study of lava tubes—caves formed following volcanic eruptions when lava cools down—an international team of researchers has uncovered clues about Earth's ancient environments ...

The moon is hostile. A newly found cave could be a lifesaver. Jupiter’s volcanic moon Io has been erupting for billions of years Jupiter’s volcanic moon Io has been erupting for billions of ...

The arms of an underwater robot helped uncover communities of giant tube worms and snails living in volcanic caves beneath warm vents in the Pacific Ocean. “Animals are able to live beneath ...

Animals and plants may be living in warm caves under Antarctica's ice, according to a study. Australian researchers said that Mount Erebus, an active volcano on Antarctica's Ross Island ...