When the echoes of the marching band fade and the last of more than 77,000 fans depart, the memories remain—but so does the trash, an average of 51 tons of it. Plastic cups, wrappers and cans spill from overflowing trash receptacles, collect along pathways, and, carried by the wind, scatter across parking lots.  Post-game cleanup […] The post Notre Dame launches inaugural Innovation Challenge with plastic waste as first-year focus appeared first on Civil and Environmental Engineering and Earth Sciences .