A mysterious and highly active undersea volcano off the Pacific Coast could erupt by the end of this year, scientists say.

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

LOS ANGELES — 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 ...

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 ...