By Kurt Williams
Air quality in northern Michigan was bad on Jan., 21. At least that’s what the weather app on Sharon Emery’s phone reported. The ominous warning “Unhealthy Air Quality for Sensitive Groups” hung above the day’s current conditions of clear skies and 27 degrees. Emery has a place in Cheboygan, on the shore of Lake Huron in northern Michigan. It’s not known for poor air quality, especially in winter.