Students Christopher Figueroa (front), Zach Levine and Jinney Kil review data collected from a soil sample at UC Berkeley on Friday, March 4, 2016. Kai Vetter, a professor in the department of nuclear engineering, and a team of students has been monitorin

Students Christopher Figueroa (front), Zach Levine and Jinney Kil review data collected from a soil sample at UC Berkeley on Friday, March 4, 2016. Kai Vetter, a professor in the department of nuclear engineering, and a team of students has been monitoring radiation levels from the Fukushima nuclear plant that shutdown after a massive earthquake and tidal wave in Japan five years ago. (Photo By Paul Chinn/The San Francisco Chronicle via Getty Images)