Iowans who have their own fall cleaning done are invited to spend part of this weekend cleaning up outdoors. Volunteers head to north-central Iowa Sunday afternoon to pick up litter and trash along the Shell Rock River Greenbelt. Mild weather’s forecast, for the day of combing the greenbelt for garbage. Volunteers meet at 2 PM at either Wilkinson Pioneer Park in Rock Falls or the parking area west of Nora Springs, along old Highway 18. Working in from those locations, the two groups will meet in the middle, and drivers will return them to their cars at that point. After the work’s done, volunteers will enjoy a pizza party courtesy of TRACES, the organization that’s created a “BUS-eum” that visits schools with displays from Iowa’s World War Two history.