Can organs be built in a lab? This research isn’t something that might happen in the distant future. It’s being used today to grow human organs, open up new ways to study disease and the immune system, and reduce the need for organ transplants. Organ farming laboratories are popping up across the planet, and showing impressive results. Here we look at the state of the union of a rapidly advancing field called tissue engineering and  what’s been accomplished so far, and what is right around the corner.