The trial, which starts Monday, comes as Canada rolls back climate policies. A new government report warns the country could experience 5 degrees Celsius of warming under current emissions trajectories.By Dana DrugmandIn June 2013, torrential rain spurred one of the worst flooding events in Canada’s history. Sadie Vipond, who grew up in Calgary along the Bow River, was just a young child at the time when she and her family had to flee their home. ‘That was pretty scary with the evacuation,’ she recalled.