worldometers.info

b9v07 TIL between 1972 and 2018 the world population has doubled to nearly 8 billion, there were only 2.6 billion people in the world in 1951.
L4bV TIL the median age of the country of Niger is 14.8 years old. 50% of the population is under the age of 15.
ORN6 TIL the world population will surpass 7.5 billion people in about 15 minutes