Satellite photos of the Alberta tar sands
NASA has posted a series of satellite photos documenting the expansion of the Athabasca tar sands from 1984 to 2011. See the set here.Petropolis: Aerial Perspectives on the Alberta Tar Sands, shot primarily from a helicopter, offers an unparalleled view of this extraordinary spectacle, which scope can only be understood from far above. Labels: alberta tar sands, environment, greenpeace