Japan's Nuclear Meltdown

The largest earthquake (magnitude 9.0) in the history of Japan during 2011 and a resulting 46-foot tsunami led to one of the most catastrophic nuclear disasters in history at the Fukushima Daiichi Nuclear Power Plant; expert scientists and engineers investigate and reveal how flawed operational procedures escalated the tragedy. Also reviewed is the 2011 high-speed train collision in Wenzhou, China.