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Environment
Esteban Quispe, 18, started building robots as a kid by fusing recycled electronics and his e-waste Wall-E robot became an Internet sensation.
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Science
Ken Lou became one of Guatemala's youngest inventors at age nine when he invented a fire log from recycled materials.
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Project Earth
Jammer Vega helped his Peruvian village deal with climate change by inventing his own organic fertilizer.