Dr. Norman Rosenthal, the man who discovered SAD - Seasonal Affective Disorder - is back with “The Emotional Revolution.” He and Anne Strainchamps discuss several examples of how our feelings influence our bodies, and what we can do about it. Rosenthal says heart attack patients with untreated depression are six times more likely to have further health problems, and that the ancient evolutionary role of smell may put some science behind aroma-therapy. Rosenthal advocates being open to alternative, non-drug therapies.