A massive amount of radioactive materials has been released into the environment by the Fukushima Dai-ichi Nuclear Power Plant accident, but its biological impacts have rarely been examined. nature.com

Almost all workers, including managers required to deal with accidents, defied orders and fled the Fukushima No. 1 nuclear plant at a critical juncture when the disaster was unfolding in March 2011, documents showed. ajw.asahi.com

 A U.N. atomic watchdog report due on Friday is likely to confirm that Iran is curbing its nuclear activities as agreed with world powers in a landmark accord last year, diplomatic sources said. reuters.com

Voters in the Swiss canton of Bern have rejected a proposal for the immediate shut down of the Mühleberg nuclear power plant. world-nuclear-news.com