02:28
Emotions, Gender and Age
Psychologist and author Paul Ekman says that his research has not revealed any difference between males and females in the expression of emotion. Dr. Ekman adds that he hasn't studied the triggers of emotion or the attempts to "socially manage" emot...
02:10
Genetics and Aging
Dean Hamer, Director of the Gene Structure and Regulation Unit at the National Cancer Institute, talks about the link between genetics and aging. Dr. Hamer focuses on some of the more serious problems associated with age, in particular, Alzheimer's ...