I wake up because a bright light is shining directly in my face. For a second, I am not sure where I am. Then I remember: I am in Canada, in the province of Manitoba, on the train from the capital Winnipeg to the small northern town of Churchill at the Hudson Bay. I am in my cabin, in the sleeping car with the window blinds open so I can see the subarctic night sky. The train must have stopped at one of the small places along its way. I look at the clock, it’s 2:30 a.m. I am 40 hours on the train and there are only about eight hours to go.