The Siemens Foundation, Discovery Education and the National Science Teachers Association invite you to join the only Challenge of its kind that empowers K-8 students to create solutions to environmental problems in their own backyards, and to share their results with students nationwide. They'll learn. They'll take action. And their ideas may well end up changing the world. It's the opportunity to make a difference and win great prizes that celebrate innovation, including the chance to be featured on TV! See our 2009 winners here. Learn more at www.wecanchange.com. (less info)