The world's population—currently at about 7.8 billion people—would rise to 10.9 billion by the year 2100, but then would essentially stop growing.
The number of people on Earth is set to virtually stop growing by the end of this century in a development that would be unprecedented in modern history, a new study has shown.
"The rate is projected to fall below the replacement fertility rate by 2070. The replacement fertility rate is the number of births per woman needed to maintain a population's size," the report explained.older populations as the median age will rise from its current 31 years old to 42 in 2100 and the number of people who are 80 or older increases from 146 million to 881 million that same year.
In fact, half of the top ten most populous countries will be African in 2100, with the Democratic Republic of the Congo, Ethiopia, Tanzania and Egypt joining Nigeria on this list. The continent is expected to account for half of the babies born worldwide by 2100 and another third would be born in Asia as other regions went into decline.
The U.S. and Canada would likely be spared from a population decline as"migration from the rest of the world is expected to be the primary driver of continued population growth" in North America. Still,"Nigeria will surpass the U.S. as the third-largest country in the world in 2047" and India will overtake China as the world's largest in the next eight years and by 2059 will hitTraffic jams in Delhi, the capital of India, December 2, 2018.
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