We might be sleeping less and recording our dreams in the near future

Humans have always slept, but our descendants may be doing it quite differently than current generations. Dr. Clete Kushida, former president of the World Sleep Society and a neurologist at the Stanford Center for Sleep Sciences and Medicine, tells Josh Robin that technological advancements may make fewer hours of shut-eye just as healthy; that deep sleep may one day prove easier to get; and that one day we may even be recording our dreams. Scientists are also hoping to answer the most basic, but elusive question: Why are our bodies programmed to need sleep at all? Plus, a debunked prediction on pajamas.