Native Oysters, Genetically Engineered To Restore Bay

http://www.bayjournal.com/article/native_oysters_once_again_in_the_spotlight

Unfortunately, the highly-contaminated Potomac River and Northern Virginia's lead poisoned, drinking water issues can't be fixed by genetically-engineered, native oysters. It's time to check for more than lead there in the drinking water: prescription drugs, pesticides, insecticides and other carcinogens.