Add Yahoo as a preferred source to see more of our stories on Google. A mysterious, highly active undersea volcano near California could erupt later this year. What scientists expect A mysterious and ...

Buried deep under the Pacific Ocean, the Tamu Massif has been identified as the largest single volcano ever discovered on ...

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, the ...

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 ...