Yale Environment 360: It has been five years since a powerful earthquake and resulting tsunami caused a meltdown at the Fukushima Dai-ichi Nuclear Power Plant in Japan. While a few towns closed after the disaster have reopened and some locals have returned, groundwater en route to the ocean, as well as nearby soils, remain highly contaminated with radioactive waste. Toxic water and soil that has been removed by the cleanup projects 8,000 workers sit in a growing number storage tanks on the property, several of which...