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World Population Day is a United Nations observance that raises awareness of the world's population and its impact on living, the world, and the environment.
Sponsored and approved by the UNDP (United Nations Development Programme) in 1989, July 11 was chosen as the date to focus on the issues in the overall plans for development and solutions to the rising world population.
This date marks the anniversary of the "Day of the Five Billion," on July 11, 1987.
Between 1987 and 2011, the world's population increased by 40%, reaching seven billion on Halloween 2011.
In late 2022 or early 2023, the world's population will reach 8 billion, with the fastest growth happening in Africa and Asia. Due to the higher than average growth rates in these two regions, Islam is expected to surpass Christianity as the world's most populous religion in 2050.
With explosive population growth, global culture in the next several centuries is expected to move from a European and Western focus to Eastern and Asian.
How has the population grown?
In 33AD, the year Jesus Christ died, the worldwide population was estimated between 150 and 330 million, roughly the population of the United States. It would take 1600 years for that number to double to 603 million.
Near 1820, the world hit one billion people, approximately the population of India today.
That number would double in 110 years, hitting 2.7 billion in 1930.
Fifty-seven years later, it doubled again to five billion in 1987 and will double again in fewer than 73 years (2060) to 10 billion.
Source: United Nations.
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