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Journalist Cormac Mac Sweeney shares his experience from the Ottawa shooting and how the shooter might've gotten in.
According to U.S. officials, Michael Zehaf-Bibeau has been identified as the likely suspect in the Ottawa shootings.
Jim Sciutto reports on the Ottawa shooting on Canada's Parliament Hill and what we know about the attack. Full story
CNN's Anna Coren gets an exclusive interview with Edward Burkhardt, chairman of Montreal, Maine and Atlantic Railway.
RELATED STORY: Railway chairman: People in Canadian city 'wanted to throw stones at me'
Police say they are treating the runaway train disaster in Canada as a criminal investigation. Anna Coren reports.
RELATED STORY: Police: Evidence criminal act may have led to Canada train crash
CNN's Paula Newton reports Canadian officials say the scene of a train crash and explosion was like a crematorium.
RELATED STORY: Report: Railway head says train in Canada tampered with
More rain is expected this weekend in already flooded parts of Canada. CNN's Paula Newton reports.
RELATED STORY: In Alberta, misery rises along with floodwaters
CNN's Paula Newton reports on allegations that the Toronto mayor can be seen using drugs in a cell phone video.
RELATED STORY: Reports: Video appears to show Toronto mayor smoking from crack pipe
Singing astronaut Chris Hadfield covers David Bowie's song "Space Oddity" in space and wows cyberspace. CNN's Jeanne Moos reports on an out-of-this-world song. (Video)
Must see video: CNN's Lisa Sylvester reports on an ice phenomenon that's invading dozens of lakefront homes. (Video)