Not every 11-year-old boy spends his time thinking about how to stop a dangerous oil spill. “I figured, why should you come up with something to manage (oil tank spills), when you can make sure it can’t happen?” said Christian Benitez, a fifth-grade student at Centennial Arts Academy in Gainesville. “I decided to come up with a tank with an engine for the oil tankers where they wouldn’t be using oil, they’d be using water.”