In Earth Day setback, Brazil OKs dam that will flood swath of Amazon

Damage to the environment is also a major issue. The Xingu river basin has about four times as many species of fish as the whole of Europe, but the work will kill millions of animals and threaten extinction for some species, said Hermes Medeiros, a local ecologist on the review board.

Photo courtesy of Donizete Tomé/O Eco