The setting sun backlights a pristine array of pines of different sizes and species. Far northern Canadian countryside rolls by at a leisurely pace of a train ride, viewed through a glass-enclosed upper deck of a special observation car. Waves of green and brown in slightly varying shades sweep by. There’s no working wifi to interrupt with emails or social media demanding attention. It’s mesmerising and calming. Two or three hours pass peacefully without notice. Now repeat. Repeat again. And again. Two hours becomes two days. To get between Churchill, Manitoba, Canada – the polar bear and belu…