The Environmental Protection Agency says a March aerial survey of the West Lake Landfill in Bridgeton has determined radioactive waste buried there does not pose a danger to the public but environmental activists disagree. kmov.com Even small amounts of radioactivity in plankton are a big problem because of bio-magnification, as it travels up the food chain as larger animals eat smaller animals. japantimes.co.jp The Japanese government is poised to order TEPCO to implement a plan to install an underground frozen wall system around the reactors at Fukushima Daiichi. simplyinfo.org The Nuclear Regulatory Commission tightens rules for use of uranium and thorium in manufacturing. nuclearstreet.com