Australian Broadcasting Corporation: The earth beneath Fort McMurray’s pine and spruce trees holds as much oil as the United States, Russia and the United Arab Emirates combined. In this booming Alberta, Canada, town, the rush to get that oil becomes obvious a couple hundred miles north of Edmonton, where the forest disappears into the largest industrial zone in the world, crawling with some of the largest trucks ever made. Jennifer Sims, who drives one at the Muskweg River Mine, north of Ft. McMurray, said it’s …