The world in a drop of water: DNA tool transforms nature tracking

View of an Amazon pink dolphin (Inia geoffrensis) at the Amana Lake at Amana Sustainable Development Reserve in Amazonas state, Brazil. — AFP

In their search for pink river dolphins, researchers in the Peruvian Amazon scooped up river water sloshing with genetic material that they hoped could trace the elusive creatures.

They found what they were looking for. And then some.