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: 'I don't see him winning': Donald Trump weighs in on Jeb Bush Obama vetoes Keystone bill What's the appetite for oil and gas deals? CIBC sees Alberta heading for mild recession NBC anchor suspended for six months over false Iraq war claims Floods in Peru leave 15 dead Remains of sunken Brazilian town re-emerge 45 years later Jim Prentice promotes Keystone XL pipeline in Washington Why solar may be the next shale Fort McMurray residents 'cautious' amid low oil prices Imperial Oil pushes on with oil sands projects despite price crash 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 Comments AA More Related to this Story Ottawa strikes back at Al Gore's remarks on oil sands as 'open sewer'