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: The mystery around why this Calgary woman was declared dead by Alberta Health Growing, selling, smoking weed now legal in Uruguay Kerry talks about Obama Castro handshake Are fracking concerns legitimate? Obama, Raul Castro shake hands at Mandela memorial Victoria Beckham, Mike Tyson and other celebrities remember Mandela on Twitter 'They're still running. They're still shooting,' says 911 caller at Sandy Hook 14-year-old Massachusetts boy pleads not guilty to raping, killing teacher Victim's family files Navy Yard shooting lawsuit Norman Rockwell's 'Saying Grace' sets auction records selling for $46-million Attorney says Obama's uncle received no special treatment in deportation case Eleven-year-old artist focuses on gun violence through art How oil from the U.S. Bakken formation decimated Lac-Mégantic From the U.S. to Lac-Mégantic: Inside the massive growth of oil by rail Naheed Nenshi wants Calgary Zoo to stay open for 'generations' Calgary family tries to import puppies, faces paperwork nightmare Fog blamed for 40-car pileup in Alberta Storm wallops U.S. East Coast Yale campus on lockdown, police search under way Ohio school superintendent charged in rape case Comments AA More Related to this Story Ottawa strikes back at Al Gore's remarks on oil sands as 'open sewer'