Why Do So Many Earthquakes Strike Japan?

A magnitude-7.0 earthquake struck southern Japan today, less than two days after a 6.2-magnitude temblor rocked the same region, triggering tsunami advisories in the area. The most recent earthquake struck the Kumamoto region on Japan's Kyushu Island early Saturday (April 16) at 1:25 a.m. local time (12:25 p.m. ET on April 15), according to the U.S. Geological Survey (USGS). With residents of the Kumamoto region reeling from two sizable earthquakes in as many days, and with memories of the massi