Most earthworms in U.S. soils aren’t native–and they are threatening America’s forests. Smithsonian ecologist Melissa McCormick explains how earthworms can be good for gardens and bad for forests, and how they could alter the course of climate change. To learn more about earthworm invaders click here.
View more “Ecosystems on the Edge” videos from the Smithsonian Environmental Research Center and learn how you can help, visit the Web site: http://ecosystems.serc.si.edu.
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