NASA is inviting fifth through eighth grade students to participate in a waste limitation management and recycling design challenge. Participants in the competition will design and test water recycling systems that could be used for future exploration of the moon. The top three teams will receive awards, and the first place team will receive an expense-paid trip to NASA's Kennedy Space Center in Florida.

Teams of up to six students and one teacher or mentor should submit their proposals and results to NASA for evaluation by Feb. 1, 2010. Schools in the United States and its territories, science museums, science centers and home school groups may host teams.