Rational Optimist Quiz
How well do you know the state of your world today? Take our quiz to find out.
Since 1980, the global population has roughly doubled to 8 billion.
According to the United Nations, by what year will the global population double again?
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Wrong!
Correct!
Answer: Never
While out-of-control population growth was a valid concern in the 1960s, growth has dramatically slowed. The UN projects population will peak by 2100, at around 10 billion. Many big countries like Japan, Germany—and even China—have already stopped growing.
Why? As a country grows wealthier, its citizens have fewer kids. Our overpopulation “problem” has already been solved.
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