Belo Monte Dam.This photo is part of the AOS MONTES project. Captions and Photo source: ©© André Solnik
Advocates of huge hydroelectric dam projects on the Amazon, Congo, and Mekong river basins often overestimate economic benefits and underestimate far-reaching effects on biodiversity, according to a new article by scientists representing 30 academic, government, and conservation organizations in eight countries….
Sediment Trapped Behind Dams Makes Them ‘Hot Spots’ for Greenhouse Gas Emissions, (08-01-2013)
The large reservoirs of water behind the world’s 50,000 large dams are a known source of methane. Methane has a warming effect 25 times more powerful than carbon dioxide. That knowledge led to questions about hydroelectric power’s image as a green and nonpolluting energy source…
Let’s Talk About Sand: Denis Delestrac At TEDxBarcelona
Denis Delestrac latest feature documentary, “Sand Wars” takes the audience around the globe to unveil a new gold rush and a disturbing fact: we are running out of sand! In this TEDxBarcelona talk, he explains us where sand comes from and where it ends up…