Poverty, malnutrition, illiteracy, child labour and infant mortality are falling faster than at any other time in human history. Life expectancy at birth has increased more than twice as much in the last century as it did in the previous 200,000 years. The risk that any individual will be exposed to war, die in a natural disaster, or be subjected to dictatorship has become smaller than in any other epoch. A child born today is more likely to reach retirement age than his forebears were to live to their fifth birthday.
