There's no question that tar sands in Canada are probably the largest source of oil available to the U.S. over a long… — T. Boone Pickens Copy Share Image
The Midwest is home to the world's largest source of freshwater, and the GLRI has helped our nation to preserve our abundant… — John E. James Copy Share Image
It was huge mistake to avoid working with the rest of the world because (a) we're the largest source of the problem:… — Bill McKibben Copy Share Image
