Around a decade ago, beavers were spotted in the rivers of southwest England for the first time in 400 years. But exactly what impact have they made on the waterways they live in during this time?
In this episode we speak to Prof Richard Brazier, a researcher based at the University of Exeter and co-director of the Centre for Resilience in Environment, Water and Waste.
He tells us what he and his team have learned from studying these charismatic and often misunderstood animals over the last ten years, and how they provide a compelling argument for the reintroduction of other species.
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Instant Genius