| Summary: | How might rare medical conditions be a force for good? This probing documentary reveals the extraordinary people who are helping international scientists make medical breakthroughs. A woman who can smell Parkinson's disease helps doctors find a new way to diagnose this debilitating condition. A pioneering stem cell trial provides hope for those with multiple sclerosis. And a patient's inability to sense pain inspires a new generation of pain relief. The World's Most Extraordinary People meets the scientists and patients at the heart of these stories - and takes us right to the edge of scientific understanding. In this episode, we meet a girl whose heart has formed outside her ribcage, a man who can spend nine minutes underwater without taking a breath, a woman who is growing a second skeleton, and a paralyzed man who is regaining movement thanks to a chip implanted into his brain that can "read" his brain signals.
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