Zachary Wilson, an employee at the University of Colorado’s Alferd Packer Grill, holds an Al’s Exchangeable, a plastic to-go container that
Zachary Wilson, an employee at the University of Colorado's Alferd Packer Grill, holds an Al's Exchangeable, a plastic to-go container that students can use and then exchange, reducing the use of throw-away take-out boxes. ( MARTY CAIVANO )