While environmental groups acknowledge that they lost many supporters in the 2010 mid-term elections, they add that the election was not a referendum on environmental issues, but on the economy and jobs. “This was an election about unhappiness over the economy, first and last, and the majority paid the price,” says Rodger Schlickeisen, president, Defenders of Wildlife Action Fund. “We lost a lot of champions and a lot of long-timer supporters,” says Michael Brune, executive director of the Sierra Club. But he adds that voters still overwhelmingly support clean energy and curbing pollution. Brune points to California voters’ rejection of
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.