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World’s largest dam removal unleashes US river after century of electric production. On the Elwha River in northwestern Washington state, a demolition crew plans to detonate explosives within the remaining section of the Glines Canyon Dam, destroying the last 30 feet of the 210-foot-high dam and signaling the culmination of the largest dam-removal project in the world.
There’s a big leak in America’s water tower. The northern arm of the Rocky Mountains is sometimes called “the crown of the continent,” and its jewels are glaciers and snowfields that irrigate large parts of North America but the region is getting warmer, even faster than the rest of the world.