Ad campaigns launched for and against Keystone pipeline Add to ... CTVNews Video Published Monday, Apr. 08 2013, 2:50 AM EDT Last updated Thursday, May. 02 2013, 11:12 AM EDT More on the commercials produced by Keystone pipeline critics, and the pro-pipeline ads from the Alberta government. Watch More Video: "I am here to play in the snow": Chicago resident in Boston Harper says Canadians support troops firing on ISIL militants New York City Mayor on snow storm: 'We got lucky' Winter blast strands passengers at Newark airport Strong winds and heavy snow hit the Maritimes Obama arrives in Saudi Arabia to pay respects to royal family Raw: Sinkhole swallows family's car after water main breaks Amateur footage shows aftermath of car bomb explosion outside Tripoli hotel 'There is no German identity without Auschwitz,' German president says on anniversary of liberation Charlie Hebdo journalist on the importance of secularism Professional cuddlers wanted: Canadian company expands to Winnipeg Slain RCMP Const. David Wynn remembered at regimental funeral Dramatic footage captures Mexico's Volcano of Fire erupting Raw: Pilot uses full-plane parachute to escape crash unscathed Greek F-16 jet crashes at military base, killing several New York governor lifts travel ban, urges drivers to use extreme caution U.S. blizzard proves powerful but short of forecasts B.C. woman first Canadian diagnosed with H7N9 avian flu Time Lapse: Snow, frost piling up in New York's Times Square NDP MP demands Tories 'fix' Nutrition North program Comments AA More Related to this Story energy Video: Athabasca spill adds to Alberta oil's image problem Energy Video: Where do average Americans stand on the Keystone pipeline?