For nearly half a century, scientists have been trying to create a process for transplanting animal organs into humans, a theoretical dream that could help the hundreds of thousands of people in need of a lifesaving transplant. But the risks, specifically of transmitting the PERV virus from pigs to humans, have always been too great, stalling research -- until now. In a mind-blowing talk, geneticist Luhan Yang explains a breakthrough: using CRISPR, a technique for editing genes, she and her colleagues have created pigs that don't carry the virus, opening up the possibility of safely growing human-transplantable organs in pigs. Learn more about this cutting-edge science and how it could help solve the organ shortage crisis. Check out more TED Talks: www.ted.com The TED Talks channel features the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and more. Follow TED on Twitter: www.twitter.com/TEDTalks Like TED on Facebook: www.facebook.com/TED Subscribe to our channel: www.youtube.com/TED

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