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Follow the dramatic personal journey of Hugh Herr, a biophysicist working to create brain-controlled robotic limbs. At age 17, Herr’s legs were amputated after a climbing accident. Frustrated by the crude prosthetic limbs he was given, Herr set out to remedy their design, leading him to a career as an inventor of innovative prosthetic devices.
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As state-legalized cannabis spreads, NOVA explores its little-known risks and benefits.
53:46
NASA launches its most ambitious search yet for traces of ancient life on Mars.
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Discover the fascinating chemistry that makes our world and everything in it—including us.
53:30
Discover the fascinating chemistry that makes our world and everything in it—including us.
53:31
Discover the fascinating chemistry that makes our world and everything in it—including us.
53:21
Can bringing predators—and fear—back into an ecosystem help restore its natural balance?
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Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.
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Discover the science behind Leonardo da Vinci's masterpieces—and Mona Lisa's iconic smile.
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