David plays the clarinet in his school's jazz band, and he also plays the piano. He enjoys reading, hanging out with friends, and playing computer games. As for his future career, he says, "I am interested in becoming a doctor, because I want to help people."
His science teacher, Dr. Zreda, is David's mentor. "He has impacted my scientific pursuit profoundly," David says.
Tyler's father is a wastewater quality supervisor. He explained to the boys the problems he faces as a result of clogs in the sewer system that are caused by inadequate grease trap maintenance by restaurants. He explained that both liquid and solid enzymes are commonly used to reduce grease in grease traps. Tyler and David wondered which form worked better.
Two restaurants gave the boys access to grease traps. Tyler and David began by testing samples from each of the traps to ascertain how much oxygen was required to change the chemicals in the grease trap into water and how much liquid could pass through the traps. Then, solid enzymes were added to both traps. Three weeks later the traps were pumped and cleaned and a liquid enzyme was dropped in slowly. To their surprise, the solid enzyme worked best.
