Estimation question
How many people have ever lived on Earth?
How close can you get? Make your own guess and earn points before you look at the answer.
Guess it yourself and earn points
Show the answer and the reasoning
The answer
117 billion people
About 117 billion. Roughly 7% of everyone who ever lived is alive right now.
How to get there
- Few people lived at any one time, but over a huge number of generations
- Demographers estimate 117 billion births
Source: Population Reference Bureau (2020)
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