At 2:46 p.m. Tokyo time, Japan was hit with what early news reports are calling the most powerful earthquake in a century. An 8.9 magnitude quake occurring about 230 miles northeast of Tokyo set off ...

A massive tsunami generated by a magnitude-9.1 earthquake struck Japan's coast within 30 minutes. Waves as high as 130 feet spilled over seawalls. Within days, three nuclear reactors were disabled.

A thin, soft and slippery layer of clay-rich mud embedded in rock below the seafloor intensified the 2011 Japan earthquake ...

New findings published in the journal Science help explain why the 2011 earthquake off the coast of Japan created such a large tsunami. An international team of geologists and geophysicists drilled ...