In honor of the fiftieth anniversary of the Apollo II moon landing and walk, SoundPractice co-host, Mike Sacopolus, interviews David Wolf, M.D. Dr. Wolf a physician and astronaut, is a veteran of four space missions. Three of his missions were on the space shuttle and one was a long-term mission on the Russian space station, Mir. In addition, Dr. Wolf pioneered research in the field of regenerative medicine. Dr. Wolf has a unique perspective on the future of medicine and space travel.