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WWF works to sustain the natural world for the benefit of people and wildlife, collaborating with partners from local to global levels in nearly 100 countries.
What can we learn about an ecosystem by analyzing its water? More than you might expect. Water—like soil, air, and snow—contains DNA naturally shed by animals through their hair, feces, saliva, and skin. Studying this environmental DNA, or eDNA, can give us a snapshot of the health of an ecosystem and its species. And while it might sound like a tool from your favorite true crime podcast, eDNA has enabled big strides in wildlife monitoring.