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Kempton
West Babylon, New York, United States
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April 29, 2021, 7:55 p.m. PDT
Solar Desalination Round 2
registered for challenge
April 28, 2021, 10:33 p.m. PDT
Our shared future
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April 29, 2021, 5:44 p.m. PDT
E-ROBOT Prize
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