By Steven Sukkau, Local Journalism Initiative Reporter, Winnipeg Sun When you live in Churchill, the “Polar Bear Capital of the World,” you could be forgiven for thinking you know the place. You know which streets the bears sometimes wander down. You know where the belugas roll in summer. You know the restaurants, the winds, the long winter dark. But what if you don’t? What if you are 9 years old on summer vacation and you’ve never once ridden on the whale-watching boats that idle at the dock all July? What if you’ve never stood on a tundra buggy, staring out over the spongy muskeg, or run your hands through frozen soil to see how houses sink into permafrost? This summer, a group of children in Churchill have been learning what…