Ad campaigns launched for and against Keystone pipeline Add to ... CTV News Published Monday, Apr. 08, 2013 2:50AM EDT Last updated Thursday, May 02, 2013 11:12AM EDT More on the commercials produced by Keystone pipeline critics, and the pro-pipeline ads from the Alberta government. Watch More Video: Raw: Flames erupt as freight trains collide in Texas 'A failure at the most senior levels of government': GOP Benghazi report Justin Trudeau goes running with Mexican President Farage tells EU MPs, 'You're not laughing now are you?' Pakistani clerics declare transgender marriages legal Medical schools expand training to tackle opioid painkiller abuse Admissible evidence? Pet parrot repeats owner's dying words 'We were humanized in there': Stonewall Inn dedicated U.S. as national landmark Poles in U.K. worried over post-Brexit hate crimes Plaintiff in assisted dying challenge feels 'left out' of new law U.S. Supreme Court overturns governor's corruption conviction Cameron: U.K. not triggering formal Brexit process yet Pro-choice victory as Texas abortion clinic regulations struck down Watch as hundreds flee besieged Falluja Kerry: EU vote not what U.S. had hoped Emotional reactions after Supreme Court strikes down Texas abortion law Police officer proposes at London Pride parade More rain threatens already flooded West Virginia U.K. and Europe in political turmoil while EU citizens in London fear future Boris Johnson says 'project fear' is over following Brexit 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?