Pale Grass Blue Butterfly (IMAGE) American Genetic Association Caption This is a pale grass blue butterfly, one of the most common species of butterfly in Japan. Recent research has revealed major impacts on this species from the radiation leaks at the Fukushima nuclear power plant. Credit Joji Otaki, University of the Ryukyus, Okinawa, Japan Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.