![Director James Cameron and actress Sigourney Weaver are in Brazil to protest against a proposed dam in the Amazon](http://hosted.ap.org/photos/0/022572a5-4125-4e41-846e-88d760250ecc-small.jpg)
Director James Cameron and actress Sigourney Weaver are in Brazil to protest against a proposed dam in the Amazon that would be the world's third-largest hydroelectric project. The Hollywood celebrities will join about 1,000 demonstrators in Brasilia's streets Monday as they urge the government to halt the planned Belo Monte project.
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