Ad campaigns launched for and against Keystone pipeline Add to ... CTV News 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: Tories 'very disappointed' in Omar Khadr bail decision Alberta leaders sound off about trust, mismanagement of wealth at leaders debate Security footage captures scuffle between knife-wielding robber, shop owner Mexican teen returned home after taken by authorities led astray in mistaken identity case Ontario's only new tax is on beer Ontario's big budget question: Where to find $8.5-billion? Military leak to mistress lands Petraeus two years probation, $100,000 fine Michael Brown's parents sue over son's death Ukraine's internally displaced people, lost and in limbo Loretta Saunders' mother says she prays for parents of killers Europe buries migrants, commits to saving lives Loretta Lynch confirmed as next attorney general Conjoined Peruvian twins who share a liver to be separated More coyotes are showing up in Manhattan and cops can't catch them Massive backyard sinkhole threatens to swallow two New Jersey homes Chile's Calbuco volcano erupts at sunset, sending ash into a pink sky Plane crash lands on B.C. highway Watch as Chile's Calbuco erupts, lights up the sky Millions of hens euthanized in midwest bird flu outbreak How humpback whales came back from the cusp of extinction 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?