Sara Mills is a brilliant scientist working on the cutting edge of regenerative medicine. She works at Dark Horse Consulting, which specializes in cell and gene therapy. They're using stem cells and viruses to restore function in sick and injured people! This is way beyond growing ears on rats, people. Sara Mills walks us through the controversies that have held back the field, and shares how education on the topic usually puts those concerns to rest. We discuss the future of regenerative medicine, which includes helping quadriplegics walk again and 3D printing organs, which are both not too far off.