The tremor occurred at 12:52 p.m. local time (1:52 a.m. GMT) and was recorded at a depth of 423 kilometers below the seabed.

The first “Big One” earthquake in more than a decade has rattled the world. What if it had happened anywhere else? Say, California? Or Japan?

Krasheninnikov volcano has erupted on Russia's Kamchatka Peninsula. This is the second volcano to erupt in the region ...