Calgary Herald: I’m not surprised provincial Environment Minister Rob Renner is feeling the crushing weight of mounting global disapproval over our development of the oilsands on his shoulders in the wake of a recently published article in National Geographic, illustrating the way bitumen is mined and produced in northern Alberta. After all, National Geographic is a widely disseminated publication. Its report comes on the heels of an analysis in The Economist declaring the boom in the oilsands …