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World Service,3 mins

What secrets do ancient wetland trees reveal?

Science In Action

Available for over a year

The Black River in south-eastern North Carolina is home to ancient wetlands trees that give an accurate record of eastern United States climate change. Dendrochronologist Dr Dave Stahle sets the scene and discusses one tree that's over two thousand six hundred years old. (Photo: Bald cypress trees. Credit: University of Arkansas, Tree-Ring Laboratory.)

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