Uranium signatures in turtles and tortoises near nuclear testing and waste sites
The shells of turtles, tortoises, and sea turtles keep growing as long as the animals live—and some of them live a remarkably long time. Cyler Conrad and colleagues analyzed the shells of five specimens from areas that potentially accumulated anthropogenic uranium through nuclear fallout and/or waste. Unusual uranium signatures were found in a green sea turtle from Enewetak Atoll in the Republic of the Marshall Islands, a desert tortoise from southwestern Utah near the Nevada National Security Site (formerly known as the Nevada Test Site), a river cooter from the Savannah River Site in South Carolina, and a box turtle from Oak Ridge, Tennessee, ...
















