This news items from the Cornell Chronicle is about: More than a dozen dedicated teenage scientists spent their lunch hour Oct. 24 learning from Cornell scientists about the chemistry of the Hudson River and its invasive species. Scientists at Cornell’s College of Veterinary Medicine developed genetic tests that detect trace levels of environmental DNA to help identify invasive species in waterways. The eDNA test kits are now being used by hundreds of students annually as part of a program called Fish Tracker, that is supported and managed by Cornell University. James Casey, associate professor of virology in the Department of Microbiology and Immunology at the College of Veterinary Medicine, developed the genetic tests.