This question was asked to the public in 14 countries in the Gapminder Misconception Study 2017 »
The question
The UN predicts that by 2100 the world population will have increased by another 4 billion people. What is the main reason?
- A: There will be more children (age below 15)
- B: There will be more adults (age 15 to 74)
- C: There will be more very old people (age 75 and older)
Correct answer is B. In their forecasts, the experts at the UN Population Division calculate that 1 percent of the population increase will come from 0.37 billion more children (age 0–14), 69 percent from 2.5 billion more adults (age 15 to 74), and 30 percent from 1.1 billion more very old people (age 75 and older). Data is from UN-Pop[3].
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