Tsunami alerts blanketed the West Coast and Alaska after one of the strongest earthquakes in recorded history.

Tsunami alerts blanketed the West Coast and Alaska after one of the strongest earthquakes in recorded history.

The recent Kamchatka quake ties for sixth on the all-time list. Here are the top five earthquakes by magnitude.

The Klyuchevskoy eruption was hours after a huge earthquake early Wednesday triggered a tsunami that sent waves across the ...