It’s that time of year again – school bells are ringing across the States, and students everywhere are getting ready for a brand new year. To encourage you to green your back-to-school routine we’re offering you a chance to win a brand new PUBLIC Bike or a Voltaic solar backpack! We’re looking for smart ideas that will lower your environmental footprint for the coming academic year, and our grand prize winner will receive their choice of a PUBLIC C1 or PUBLIC V1 bike decked out with a rear rack, a metal basket, and a brass bell (worth a total of $574!), and three runners-up will each win a Voltaic Converter solar-powered backpack (worth $129) — perfect for keeping your electronics charged for a full day of classes. The deadline for all submissions is TOMORROW September 17th at 11:59PM ET – read on to learn how to enter!