Mongabay: Researchers with the University of East Anglia say the full extent of impacts to biodiversity of large hydroelectric dams in lowland tropical forest regions have been "severely overlooked." Mega-dams are being proposed the world over as sustainable development projects, even though there have been plenty of studies calling attention to the fact that the emissions savings from hydroelectric dams are drastically overstated. But this is one of the first times that such an extensive study has been done...