There is a statistic I heard a number of years ago: if you know somebody who is 85 years old, that person was born into a world that had a third as many people as the world does today. The population has tripled in the past 85 years.

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“There is a statistic I heard a number of years ago: if you know somebody who is 85 years old, that person was born into a world that had a third as many people as the world does today. The population has tripled in the past 85 years.”