‘Even a five-year-old can do it’: Collecting river water samples helps map life on 10% of Earth

Scientists are increasingly using environmental DNA, or eDNA, to map Earth's wildlife. The technique works by collecting water and soil samples and extracting genetic material—a process so simple that even five-year-olds can participate. According to Euronews, this approach is helping researchers create a biodiversity map covering ten percent of the planet. As wildlife populations decline globally, eDNA sampling offers a scalable, low-cost way to track species and monitor ecosystem health. The breakthrough democratizes conservation, suggesting that protecting Earth's remaining wildlife doesn't require expensive labs or advanced degrees—just curiosity and a willingness to get your hands wet.

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