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Half of all people who have lived to 65 are alive today. Human lifespan has increased from 33 years in prehistoric times to an estimated 67.2 years in 2010. Women live longer than men, and the world reproductive rate is declining.
Believe it or not, half of all people in history who have reached the age of 65 are alive right now. Human lifespan has increased since prehistoric times, when it measured about 33 years in the Upper Paleolithic to an estimated 67.2 years in 2010. That’s an average, of course. The People’s Republic of China, for example, has a higher life expectancy of 84.4 years.
The facts of life:
The oldest documented person lived to be 122 years old: a French woman named Jeanne Calment. She died in 1997.
Women live longer than men, 5 to 10 years longer. Of living people over the age of 100, 85% are women.
The world reproductive rate is in decline, currently at 2.6 children per woman. The world population is about 6.8 billion.
Even in rich countries like Japan, Germany and France, there are fewer than two people working to support government funding for every retiree.
