What's Swimming In The River? Just Look For DNA
If you want to protect rare species, first you have to find them. In the past few years, biologists have developed a powerful new tool to do that. They've discovered that they can often find traces of animal DNA in streams, ponds — even oceans. The idea took root just five years ago, when biologists …
Benjamin Gerstel flipped this story into It's Alive•3921d