We can change the world challenge. Running September 13, 2012 through March 5, 2013, teams of K-12 students are challenged "to create sustainable, reproducible environmental improvements in their local communities."
The competition is broken down by age groups: K-5, 6-8 and 9-12. Click for details.
And while you're clicking, check out the free resources for teachers (older students and curious parents may find value in it as well) on the Siemens STEM Academy site.
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