From reliable water supplies to large-scale electricity generation, the benefits brought by dams can be huge. But so can the problems. Tim Harford explains how these massive structures have changed the world for many, but led to catastrophe for others.
It’s May, 30th 1889, and the South Fork Dam in Western Pennsylvania is in danger. After nearly a month of hard rain, eight inches have fallen in one day, filling the lake behind the dam to capacity. And the dam’s owners, the South Fork Hunting and Fishing Club, have cut corners i ...Show more
Half of the world’s river systems host hydro-electric dams. They offer reliable electricity but their construction forces people from their homes and disrupts the natural life of the river.Scores of dams already span the Mekong River, the great waterway linking China to Vietnam. ...Show more