Two major earthquakes struck Alaska and Japan recently. Is this is a statistically normal scenario or a cause for alarm?

Japan's Meteorological Agency issued a rare megaquake warning following Monday's 7.6 magnitude earthquake, alerting of increased risk for a magnitude 8+ quake ...

Japan issued a megaquake advisory Tuesday after a magnitude 7.5 earthquake struck off the eastern coast of Aomori. Dr. Lucy Jones tells us how it relates to Southern California.

Japan's unprecedented "megaquake" advisory means the risk of a magnitude 8 or higher earthquake off its northern Pacific ...

Then Japan's northern region took a 7.6 mega-quake on December 8, sparking tsunami alerts (later cancelled), injuring at ...

Japan is assessing damage and cautioning people of potential aftershocks after a late-night 7.5 magnitude earthquake caused ...

TOKYO (AP) — Japan issued a megaquake advisory Tuesday after a magnitude 7.5 earthquake struck off the eastern coast of ...

Aftershocks have been recorded for both earthquakes. On Dec. 8, Japanese authorities warned an even more powerful earthquake ...

TOKYO — A powerful 7.5-magnitude earthquake struck off northern Japan late Monday, injuring more than 20 people and ...

Officials said the megaquake advisory is not a prediction and the probability of a magnitude 8 or larger quake is only about ...

Japanese authorities have cautioned the public over potential aftershocks after the initial earthquake struck around 11:15 ...