Greyhound Racing Showcased, Flip Wilson Interviewed, California Primary, Nuclear Bomb Report, 10th Anniversary of Robert Kennedy Assassination

Thomas Hoving examines the disco craze and visits Xenon in New York City; Jubilation in Las Vegas; Ones, a disco for children in New York City; the Empire Rollerdrome in Brooklyn; and a retirement/rehabilitation home in Los Angeles, where disco dancing is used as a form of therapy.

After having failed three times to swim the English Channel, Diana Nyad talks about why it isn't such a big deal and about how it's really just a matter of luck.