An Illinois high school class is doing what they can to go green. The kids want you to think before flushing your old medicine. Increasingly, medicines are getting past water treatment plants and into our drinking water. Government scientists have found pharmaceuticals in 80% of the waterways they test. The students' program has gained national recognition. Its called the prescription drug disposal program, or p2d2 . People drop off unused drugs at participating pharmacies. Then they're shipped to an incinerator where they're turned back into energy.