There are more than 2000 dams in the Pacific Northwest, most of them built in the middle of the last century when dam building was in its heydey. But now many of those dams are aging and are no longer in use. Moreover, people are reassessing the value of these dams in light of challenges they pose to fish populations. This story, from writer/producer Jes Burns of EarthFix, looks at a the relatively new phenomenon of dam removal and the surprisingly quick return of healthy river ecosystems.
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