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Climate change behind cold snap?

Penn State University's Prof. Michael Mann explains the science behind the recent cold weather engulfing much of North America

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Business - The Bottom Line: Pipelines, pipelines, pipelinesNov 22, 2014 | 10:00Business The Bottom Line: Pipelines, pipelines, pipelines Video
Business The Bottom Line: Pipelines, pipelines, pipelines Nov 22, 2014 | 10:00Our weekend business panel discusses the Keystone XL, EnergyEast and Kinder Morgan pipelines
News - Michael Brown's family on looming decisionNov 22, 2014 | 5:11News Michael Brown's family on looming decision Video
News Michael Brown's family on looming decision Nov 22, 2014 | 5:11'If the grand jury says there's no indictment then this thing isn't over,' says cousin Ty Pruitt
Politics - Gen. Tom Lawson on Canada's ISIS strategyNov 22, 2014 | 11:11Politics Gen. Tom Lawson on Canada's ISIS strategy Video
Politics Gen. Tom Lawson on Canada's ISIS strategy Nov 22, 2014 | 11:11CBC News speaks with Canada's chief of the defence staff about the military's role in the fight against ISIS
News - Buffalo braces for floodingNov 22, 2014 | 2:00News Buffalo braces for flooding Video
News Buffalo braces for flooding Nov 22, 2014 | 2:00CBC's Charlsie Agro reports from outside Buffalo as rising temperatures melt snow
News - Canada expanding combat mission in Iraq?Nov 22, 2014 | 2:20News Canada expanding combat mission in Iraq? Video
News Canada expanding combat mission in Iraq? Nov 22, 2014 | 2:20Politicians, military experts and security specialists are at an international security forum in Halifax Saturday discussing the danger posed by ISIS
The National - Questions raised in police collision that killed boyNov 21, 2014 | 2:31The National Questions raised in police collision that killed boy Video
The National Questions raised in police collision that killed boy Nov 21, 2014 | 2:31Quebec officer involved in fatal collision won't be charged, but new details emerge about why he was speeding
The National - Wynne-Couillard see eye-to-eyeNov 21, 2014 | 2:10The National Wynne-Couillard see eye-to-eye Video
The National Wynne-Couillard see eye-to-eye Nov 21, 2014 | 2:10Ontario and Quebec sign a pact on energy and climate change that could shift the national dynamic, Margo McDiarmid reports
The National - Ukraine anniversary of changeNov 21, 2014 | 2:53The National Ukraine anniversary of change Video
The National Ukraine anniversary of change Nov 21, 2014 | 2:53One year ago an anti-government protest inspired calls for political change
The National - Thousands protest 43 missing studentsNov 21, 2014 | 2:37The National Thousands protest 43 missing students Video
The National Thousands protest 43 missing students Nov 21, 2014 | 2:37Mexico is in the midst of a violent civil crisis, CBC's Catherine Cullen reports
The National - Buffalo after the snowstormNov 21, 2014 | 2:44The National Buffalo after the snowstorm Video
The National Buffalo after the snowstorm Nov 21, 2014 | 2:44With warmer temperatures coming, where will all that melting snow go?
The National - Fighting abroadNov 21, 2014 | 3:29The National Fighting abroad Video
The National Fighting abroad Nov 21, 2014 | 3:29A Canadian vet is fighting ISIS alongside Kurdish forces, saying, 'It's the right thing to do'
The Exchange with Amanda Lang - Market forecastNov 21, 2014 | 6:32The Exchange with Amanda Lang Market forecast Video
The Exchange with Amanda Lang Market forecast Nov 21, 2014 | 6:32Som Seif, CEO of Purpose Investments, gives his outlook for financial markets
The Exchange with Amanda Lang - Ontario-Quebec alignmentNov 21, 2014 | 7:16The Exchange with Amanda Lang Ontario-Quebec alignment Video
The Exchange with Amanda Lang Ontario-Quebec alignment Nov 21, 2014 | 7:16Matthew Mendelsohn, director of the Mowat Centre, assesses how an energy pact between the central provinces could shift the national landscape
News - RAW: Clearing rooftops in BuffaloNov 21, 2014 | 1:08News RAW: Clearing rooftops in Buffalo Video
News RAW: Clearing rooftops in Buffalo Nov 21, 2014 | 1:08Residents and work crews in upstate New York rush to clear snow-burdened rooftops to prevent collapses
News - Annie Leibovitz art exhibit opens in New YorkNov 21, 2014 | 1:53News Annie Leibovitz art exhibit opens in New York Video
News Annie Leibovitz art exhibit opens in New York Nov 21, 2014 | 1:53The famous photographer unveils Pilgrimage, an homage to American history and landscapes

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