An investigation by Professor of Geological Sciences, Roger Bilham, of the science behind the earthquake and tsunami off the coast of Japan on March 11, 2011.

In its worst crisis since World War II, Japan faces disaster on an epic scale: a death toll likely in the tens of thousands, massive destruction of homes and businesses, shortages of water and power, and the specter of nuclear meltdown. With exclusive footage, NOVA captures the human drama and offers a clear-headed investigation of what triggered the earthquake, tsunami, and nuclear crisis.