A massive wildfire in western Canada is expected to double in size by late Saturday as shifting winds push it northeast — away from the fire-ravaged Alberta community of Fort McMurray but straight into heavily forested areas offering fresh fuel.<br />Nearly 90,000 people have been evacuated from the area in the heart of Canada's oil sands region, with some forced to relocate twice as the flames shifted.<br />The fire so far has destroyed about 1,600 buildings and homes.<br />The mass evacuations forced as much as a quarter of Canada's oil output offline.<br />The region contains the third-largest reserves of oil in the world, behind Saudi Arabia and Venezuela.<br />No deaths or injuries have been reported.
