Canada's tar sands are the largest industrial project ever undertaken--spanning the size of England. Extracting the oil and bitumen from underneath unspoiled wilderness requires a massive industrialised effort with far-reaching impacts on the land, air, water, and climate. It's an extraordinary industrial spectacle, the true scope of which can only be understood from an aerial view. Shot primarily from a helicopter, Petropolis: Aerial Perspectives on the Alberta Tar Sands offers an unparalleled view of the world's largest ever industrial project...