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Who Needs Engines? Fly This Helicopter with Your Feet (VOA On Assignment May 24)


Who Needs Engines? Fly This Helicopter with Your Feet (VOA On Assignment May 24)
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On Assignment's Rebecca Ward talks to VOA's Roseanne Skirble about a long-standing science challenge: build the world's first minimally capable human-powered helicopter. The challenge has been around since 1980, with the prize still unclaimed. But as Roseanne reports, one group of U.S. university students say they are close to winning.

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