Epigenetics on Friday's Science Questions

Today on the program, Science Questions presents this special on the work of scientist Wolf Reik. He is Professor of Epigenetics at the University of Cambridge and currently studies how additional information can be added to the genome through processes called epigenetics. He made key discoveries that are important for mammalian development, physiology, genome reprogramming, and human diseases. Today producer's Sheri Quinn and Suzi Montgomery explore his work and its significance to the expanding field of epigenetics.