. >> the group fighting to stop the project says the arguments of norte energia are nonsense. it says 668 square kilometers of land will be flooded and much of the river diverted. that 80% of the xingu will be rerouted through this area and rejoin its original course here. that will cause permanent drought along the rivers big bend in the area marked in red -- great. the fish and turtles account for 3/4 of the local populations diet. the indigenous people live off fish and the resources of the forest -- resources that will disappear. >> renata pinheiro, a biologist, companies us on a trip through the pristine juggle an river landscape. she says huge amounts of greenhouse gas will be released when the forest is submerged, which will further fuel climate change. 12 indigenous tribes, including the arara, live in the region. the xingu is their lifeblood. >> jose carlos arara is the chief of the tribe. war paint, bows and arrows will hardly stop their new enemies. the government and the power company simply have more power. >> our very existence is in the stars. what will the futu