-By Elizabeth Bast
January 17, 2013- The Canadian tar sands have been called the “most environmentally destructive project on earth”, with good reason. Extracting tar sands bitumen from under the boreal forests of Alberta, Canada requires huge amounts of energy and water. It has cleared vast tracts of forest, left scars on the land that are visible from space and threatened the health and livelihoods of indigenous First Nations communities across the region.
It is a well established fact that full exploitation of the tar sands is a grave threat to the climate. Emissions from tar sands extraction and upgrading are between 3.2 and 4.5 times higher than the equivalent emissions from conventional oil produced in North America.On a lifecycle basis, the average gallon of tar sands bitumen derived fuel has between 14 and 37 percent more greenhouse gas emissions than the average gallon of fuel from conventional oil.