Mongabay: An auction to build the Belo Monte dam, a massive hydroelectric project in Brazil, is going ahead despite two court-ordered suspensions, both of which have been overturned. The dam, which would be the world’s third-largest, has been criticized by indigenous groups, environmental organizations, and most recently filmmaker James Cameron who created the wildly popular Avatar. Diverting the flow of Xingu River–a tributary of the Amazon River–the dam will flood 500 square kilometers of …