The government says global warming dried up its rivers. But they've ignored the impact of their giant dams and diversion channels.
A group of local tribes halted construction on the Belo Monte Dam for the second time this month.
According to a new report, there are now 48,000 "large" dams around the planet.
In a race to meet EPA guidelines, U.S. cities have installed dozens of these devices over the past decade.
Why there are so many old postcards of dams.
Though cities are springing up throughout the Brazilian rainforest, there are few jobs to be had