GARBAGE MOGULS — After they are approached by the Pedigree company, the young mavericks of TerraCycle stretch their imaginations to create an entire line of pet products fashioned from dog food bags, including toys, leashes and collars, dog beds, and even clothes for canines. After several product designs falter, though, the team is thrown into a last-minute scramble for viable products to pitch. (8 p.m., National Geographic Channel)