White House Science Fair Puts Whiz Kids in the Spotlight

Whether he’s shooting off a marshmallow cannon or pedaling a bike-powered water sanitation system, President Barack Obama looks forward to the White House Science Fair as a day to be shocked and awed by school-age whiz kids.

“I love this event,” Obama told reporters at last year’s fair, where he caught a basketball that was fired off by a mechanical catapult. “This is one of my favorite things all year long.”

But the science fair, which takes place for the fifth time on Monday, isn’t just fun and games: Each year’s lineup includes serious innovations — and you can’t get much more serious than the Safe & Sound smartphone app …

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