Tami Simon speaks with Dr. Sondra Barrett, a nationally recognized speaker on mind-body medicine and a medical scientist whose cutting-edge research on cancer cells led to new healing strategies for children and adults with life-threatening illnesses. With Sounds True, Dr. Barrett has written a new book, Secrets of Your Cells: Discovering Your Body’s Inner Intelligence. In the first half of a two-part interview, Tami speaks with Dr. Barrett about how we can look at our cells from a scientific and sacred perspective, how our body’s intelligence resonates in the fabric of the cell’s cytoskeleton, and the life lessons she has learned from our cells—which she calls our greatest living ancestors. (60 minutes)