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: Rescuers struggle to reach ferry in Greece Empire State Building lit in blue to honour slain officers Tight security as NATO Afghan war ends Search for missing AirAsia plane Relatives await word on missing AirAsia plane Georgain parliamentary punch-up Toronto Community Housing to spend big on repairs Fire destroys popular Yorkville restaurants 10 years later: Tsunami victims remembered Protesters block traffic in Berkeley after fatal police shooting of teen Obama honours troops in Afghanistan in Christmas address Moscow welcomes unusually late first snowfall $1.9-million falls off truck on busy Hong Kong road Pope Francis calls for peace in Christmas message Seth Rogen makes surprise visit at midnight screening of 'The Interview' Dramatic footage shows road rage incident in California Jordan confirms pilot shot down and captured in Syria Mild and foggy Christmas Eve for Toronto Clashes break out near Ferguson after police shoot and kill man Stormy weather could disrupt holiday travel across much of U.S. 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?