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: Scott Andrews' constituents react to allegations against MP Canadian Forces to help combat Ebola in West Africa Charges dropped against B.C. pipeline protesters Tiger Putin released into wild now being blamed for Chinese goat slaughter What qualifies as consensual sex? Doug Ford not running for PC leadership Watch as dozens of 'protest' sheep rush the Eiffel Tower Raw: Messy Winter Storm Hits Massachusetts Police comment following release of footage showing shooting of 12-year-old boy Obama thanks military, volunteers on Thanksgiving Dozens arrested as Ferguson protests spread to California Jian Ghomeshi's lawyer gives brief statement to media 'I don't believe a word of it': Mother of Michael Brown on officer's version of events Raw footage captures frantic scene following Jian Ghomeshi court appearance Jian Ghomeshi facing charges Thousands hold vigil for Michael Brown in Toronto Ferguson protesters flip police car, try to burn it University of Virginia president calls rape allegations 'shocking' Raw footage captures disruption at Brown family news conference Kitchener venue has no plans to cancel upcoming Cosby show 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?