The Clean Tech Competition, sponsored by the Center for Science Teaching & Learning, is a research and design competition in which teams of 1-3 students (ages 15-18), assisted by a parent/teacher/mentor, identify a problem involving sustainability — and impacts on environmental conditions, human health, and/or the economy — and then develop an original solution. Learn how the competition works and register by April 22. Finalist teams will prepare prototypes and presentations for a $7,000 grand prize.  The contest is sponsored by the Center for Science Teaching & Learning.