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Spring Man
Athlete Hugh Herr lost both his lower legs in an accident. Now he looks to springs that enhance athletes' abilities to restore his own.


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Better Baseball
The inventor of a pneumatic pitching machine teaches batters at Kent State University to 'aim to miss,' and raises their averages dramatically.


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Speed Sailing
Two sailors strive to break the world speed record for a wind-powered craft using smart designs and hi-tech materials.


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High Anxiety
Physiologists attempt to identify who will adapt to high altitudes and who might succumb to mountain sickness.


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