While China says it's stopped harvesting organs from prisoners, researchers say there's not enough transparency to be sure.
Thats a 24-fold increase since 2000.
Rebekah Ceidro is saving her friend's life, and her own.
This could mean safer life-saving organ transplants.
As Wales becomes the latest country to make organ donation opt-out, the illegal organ trade continues around the world.
Researchers want it to be used as a prosthetic heart in the future.
California is just the seventh state to pass a law that protects medical marijuana patients from being removed from organ transplant lists.
A look at the legal and illegal worldwide trade in livers, hearts, lungs, and pancreases.