Kid inventor designs lightweight sandbag that expands when wet - DC News FOX 5 DC WTTG

Kid inventor designs lightweight sandbag that expands when wet

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An 11-year-old Florida boy has been crowned the nation's top young scientist.

Peyton Robertson designed a new kind of sandbag that better protects life and property from saltwater floods.

He says Superstorm Sandy inspired him after traditional sandbags were too heavy to transport.

His design is filled with a mix of salt and an expandable beads.

When the bag's dry, it's lightweight. But when we, the contents absorb the water and weigh it down.

Peyton wins $25,000 dollars and a trip to Costa Rica!

Among the top three finalists was a boy from Reston, Virginia who invented a device that helps the visually impaired detect things in their way.

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