Scientists are predicting that a mile-long volcano off the U.S. West Coast will erupt this year. The Axial Seamount, an underwater volcano located about 300 miles off the coast of Oregon, is ...

Scientists are closely monitoring Axial Seamount, a submarine volcano located about 300 miles west of Oregon in the Pacific Ocean. Recent data show that this volcano is inflating, or “ballooning,” due ...

A swelling underwater volcano off the West Coast is now expected to erupt later than previously projected. Scientists initially thought that the Axial Seamount, which lies 300 miles off the coast of ...

A swelling underwater volcano off the West Coast may erupt later than previously projected. Scientists initially thought that the Axial Seamount, which lies 300 miles off the coast of Oregon, would ...

WELLINGTON, New Zealand — New Zealand and Australia have sent military surveillance flights to assess the damage in Tonga caused by Saturday's huge undersea volcanic eruption. Communications with the ...

SAN FRANCISCO — Though volcanoes dot the face of the planet and can be found on every continent, researchers say most of Earth's volcanic eruptions happen in a dark and faraway place: deep underwater.

Learn how geological clues preserved in ancient oceans link repeated volcanic eruptions to Triassic marine extinctions.