Sustainability is becoming an increasingly popular topic, and there's been growing support for sustainability efforts in the St. Croix Valley in particular — and in River Falls specifically, where Earth Fest will be held for the fourth year in a row on April 26th. On this week's episode of St. Croix Stories, we're joined by Mark Klapatch-Mathias, the sustainability coordinator at the University of Wisconsin-River Falls (his alma mater) and the co-chair of Earth Fest. He share more about why s...