A new study claims that an 80-100-foot-wide layer of clay exacerbated the 2011 earthquake.

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.

Since 2011, scientists have been puzzled about the force resulting from a gigantic earthquake and tsunami that destroyed, among other things, Japan's Fukushima Nuclear Plant. Now, a Guinness World ...