The annual Cardboard Canoe Race, hosted by the University of Maine chapter of the American Society of Mechanical Engineers, begins at 1 p.m. Sept. 30 on Stillwater River. Teams of as many as four people per cardboard canoe will launch from UMaine‚Äôs Steam Plant parking lot. Registration fee is $20 per team. To register or read more Cardboard Canoe Race set for Sept. 30 on Stillwater River