After months of training and preparation, regional Science Bowl champions gathered in Washington, D.C. to compete for the national title at the 2013 National Science Bowl. Some of the nation's best and brightest high school and middle school students spent the past few days showing off their science, technology and engineering skills by completing a series of tasks, including the construction of a miniature electric car, using only household items and a lithium-ion battery. In this photo, Yaniel Ramirez from Colegio Catolico Notre Dame in Caguas, Puerto Rico launches his team's electric car down the test track. Learn more about the 2013 National Science Bowl. | Photo by Jack Dempsey, Department of Energy.