It’s happened again — the world has come around and has begun to tilt back toward the sun again — and our northern world is turning light again. When I moved up here my California friends were horrified by the prospect of cold, but having survived childhood and college in Wisconsin, the coldest place on earth, I wasn’t worried about the cold. It was the dark that concerned me. Winter is long and dark here — months on end where the sun disappears by five, doesn’t show itself again until after eight. It’s one of the things that keeping a…