Le mystère des centenaires

More and more numerous ? they could reach, in France, the number of 200,000 in 2050? centenarians fascinate. The director went to meet them in France, as well as in Japan, the United States and Sardinia, and tells the daily life of those who have passed the century of existence. For their part, demographers, doctors, sociologists and researchers are examining the subject to understand the secrets of this longevity.