Notably, women in Botswana live about four years longer than men. This is the case in only a few countries, and it is a sign that something is seriously awry. It used to be so in Pakistan, but is no longer. Of the seven nations in the world today in which men live longer then women, six are AIDS-ravaged countries in Southern Africa. The only outlier is the tiny Caribbean island of Montserrat. There, some 8,000 people fled volcanic eruptions in 1995; the current population is only 5,241.