Average life expectancy in the year 1800 was no older than 40 years globally, but longer for those who survived childhood. Modern life expectancies of around 79 years in the United States are largely ...

Americans today live roughly twice as long, on average, as they did when the Declaration of Independence was signed. When the nation was founded in 1776, life expectancy was around 35 to 40 years old, ...

Humans have come to live until 93. But that is not true for everyone.An average is a number that most people do not actually ...