Al Gore calls Alberta oil sands an 'open sewer' Add to ... CTV.ca News Staff Published Monday, May. 06 2013, 12:51 PM EDT Last updated Monday, May. 06 2013, 2:06 PM EDT Why is Al Gore attacking Canada? Power Play host Don Martin weighs in on the former U.S. V.P's comments and Joe Oliver's reaction Watch More Video: Premiers renew call for infrastructure boost from Ottawa Keystone XL threatens to become budget battle What’s the difference between the loonie and the Titanic? Outgoing U.S. Defense Secretary Hagel lauded at farewell ceremony What it's like to grow up in a refugee camp Budget will be balanced despite oil price drop: Joe Oliver U.S. East Coast on alert for blizzards as storm system approaches RCMP say officer who died was doing good police work Joe Oliver on the impact of falling oil prices Reality Check: Will Alberta slip into recession? Three economists weigh in Alberta Mountie not expected to survive after shooting: Police Suspect in Alberta RCMP shooting found dead U.S. ambassador to Canada on Keystone Alberta recession fears on the rise On the job with a butler Alberta premier says sales tax up for consideration U.S. House passes bill to approve Keystone XL pipeline Man charged in attack on Alberta girl known to victim: RCMP Fracking temporarily suspended in New Brunswick Former Alberta Wildrose leader urges other members to join Tories Comments AA More Related to this Story Ottawa strikes back at Al Gore's remarks on oil sands as 'open sewer'