In the wake of radioactive releases from Japan's Fukushima Daiichi nuclear plant, critics are saying a California nuclear plant's susceptibility to earthquakes and tsunamis could affect its chances of renewing its operating license. (scientificamerican.com)
The Irish Sea in 2008 showed elevated levels compared to large ocean basins as a result of radioactive releases from the Sellafield reprocessing facility at Seacastle, U.K. Levels in the Baltic and Black Seas are elevated due to fallout from the 1986 explosion and fire at the Chernobyl nuclear reactor. (whoi.edu)
As the disaster at the Fukushima Daiichi Nuclear Power Plant was unfolding in March 2011, Ryugo Hayano started posting Twitter observations about radioactive releases. (science.sciencemag.org)