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Dams across the Midwest are aging, putting them at risk from the effects of climate change

A view of the Blue Earth River after it cleared by the Rapidan Dam.
This long-exposure drone photo provided by AW Aerial shows a home as it teeters before partially collapsing into the Blue Earth River at the Rapidan Dam in Rapidan on June 25.
Andrew Weinzierl | AW Aerial via AP