Petropolis: Aerial Perspectives on the Alberta Tar Sands

The huge tar sands in Alberta are a potentially profitable resource, but the environmental impact could be heavy and long-term. The huge tar sands in Alberta are a potentially profitable resource, but the environmental impact could be heavy and long-term. The huge tar sands in Alberta are a potentially profitable resource, but the environmental impact could be heavy and long-term. The huge tar sands in Alberta are a potentially profitable resource, but the environmental impact could be heavy and long-term.