MCLEAN, Va.–(BUSINESS WIRE)– #ExploraVision–Toshiba and the National Science Teaching Association (NSTA) today announce eight national winners of the 34th annual Toshiba/NSTA ExploraVision competition, the world’s largest K-12 science competition. This year’s winners have shared innovative proposals to help overcome some of the greatest challenges facing the world today, from healthcare challenges to transportation efforts to protecting the environment. The Toshiba/NSTA ExploraVision competition is designed