Artificial Muscles Get a Grip on Human Hand

Six years ago a scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif., issued a unique challenge: build a robotic arm using artificial muscles that could arm wrestle a human. The results of that challenge will be determined next week, when three such robotic arms will "step into the ring" to compete against a 17- year-old high school student. The ultimate goal is to win against the strongest human on Earth.

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