Why Pig Organs Could Be the Future of Transplants

Making human tissue in a lab has always been more sci-fi than sci-fact, but powerful genetic technologies may change that soon.

For the most part, the only way to replace diseased or failing hearts, lungs, kidneys and livers is with donor organs. Even then, many people struggle to find a good biological match with a donor, and 8,000 die each year in the U.S. while waiting for an organ.