CBC.caCanadian oil extraction is 'extraordinarily dirty' process, Obama saysCBC.ca"The way that you get oil out in Canada is an extraordinarily dirty way of extracting oil," Obama said during the event at a South Carolina college. "O …

CBC.caOil slides below $48, dragging TSX down another 145 pointsCBC.caThe price of a barrel of oil continued its slide on Tuesday, losing more than $2 to trade below $47.89 US a barrel. The crude drop dragged energy stocks on the TSX lower too. The S&P …

CBC.caOil tumbles to new low near $48CBC.caCrude is being driven lower because of oversupply, as the U.S. now produces far more oil than it used to because new technology has flooded the market with shale oil. So much oil, in fact, that the world is curren …