Chapter 100

People who are currently alive represent about 7 percent of the total number of people who have ever lived.

According to the Population Reference Bureau, since the time Homo sapiens first hit the scene 50,000 years ago, more than 108 billion members of our species have been born. And a large chunk of that number is alive right now. According to the bureau, the number of people alive today represents a whopping seven percent of the total number of humans who have ever lived.