It's hard to imagine Canada without Canada Post, a company that has existed for 157 years. But there are serious questions raised about the survival of the Crown Corporation, as top executives held their annual general meeting this week and offered a bleak outlook. The chair of the board warned the postal service is at a “critical juncture” and that its financial situation is “unsustainable,” having lost nearly $750 million last year. Touria Izri has the details.