Download a free audiobook and support TED-Ed’s nonprofit mission: http://adbl.co/2gauxND Check out Siddhartha Mukherjee’s “The Emperor of All Maladies”: https://shop.ed.ted.com/collections/ted-ed-book-recommendations/products/the-emperor-of-all-maladies-a-biography-of-cancer View full lesson: https://ed.ted.com/lessons/why-is-it-so-hard-to-cure-cancer-kyuson-yun We’ve harnessed electricity, sequenced the human genome, and eradicated smallpox. But
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