Representing a team of inventors who designed the bicycle-powered water filtration system, the young innovators—Elliot and Payton Karr— presented the device to President Barack Obama during the third Annual White House Science Fair, highlighting the student winners of a broad range of science, technology, engineering and math (STEM) competitions from across the country, last April. Elliot and Karr were among the 100 students from more than 40 states present at the 2013 national science fair. Obama gave the bike, which provides 20-30 people with approximately a gallon of drinking water in a 15-hour period, a spin.

“He was excited that young people could be doing something that would impact the world in a great way,” said Karr.

Photo Credit: White House

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