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Dec 29, 2020, 12:56 pm100 pts
EcoWatch
There are more than 90,000 dams in the United States. Many of those dams are at risk of failure. "Most of them were built more than 50 years ago. Usually, the design life of a dam is between 50 and 60 years, so a lot of our dams are already past their design age," says Paulina Concha Larrauri, a researcher at…
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