"60 MINUTES" LISTINGS FOR SUNDAY JUNE 15, 2008

THE SCIENCE OF SLEEP - Scientists are discovering that sleep is far more critical to human health than previously believed and have linked sleep deprivation to serious problems such as diabetes, obesity and heart disease. Lesley Stahl reports. Shari Finkelstein is the producer. THIS IS A DOUBLE LENGTH SEGMENT

THE PURSUIT OF HAPPINESS - Little Denmark, with its five-and-a-half million people, is the happiest country in the world, says a study done by an English University. Morley Safer reports why the Danes are so happy and explores why the U.S. is way down the list. Deirdre Naphin is the producer.