The director of the United Nations Population Division, John R. Wilmoth, has presented a new report at the 2015 Joint Statistical Meetings suggesting the current world population of 7.3 billion will shoot to nearly 11.2 billion by the time the century is over, and Nigeria will drive this spike in world populations because of the high fertility rates in Africa and beyond.
Wilmoth says Nigeria, the most populous African country with a population of 182 million, will experience exponential population growth to bring its population figure to around 752 million by 2100; and if for any reason it cannot attain that figure due to certain statistical events, the country has a 90% chance of spiking to 439 million – 2.5 times its current population, by the time the century is over – unless of course it reins in its high fertility rate.
Africa as a continent has a population of about 1.2 billion – which will drive the population explosions to be experienced by all other countries of the world because of the continent’s high fertility rates. However, it is estimated that the population of Africa would have risen to hit a mark of between 3.4 billion to 5.6 billion by 2100. And even though African countries are trying to reduce their fertility rates within the past decade, they have not achieved as much as Asia, Latin America, and the Caribbean achieved in lower fertility rates in the 1970s.
Wilmoth says the United States has a population of 322 million, but this would have risen to 450 million by the end of 2100 since the country’s population is growing at a rate of 1.5 million per year. The Earth’s 7.3 billion people will shoot up to 9.5 billion by 2050 and then spike to 13.3 billion by the turn of 2100.
The population scientist used demographic model that is based on historical data to compute the rate at which Nigeria, Africa, the US, and the world will grow by 2050, 2100, and by the end of this century.
Ultimately, federal governments must find a way to contain the rising population explosions by making economic, social, and infrastructural facilities ready to accommodate the growth, but then the environment will still have to suffer for the human multiplications on Earth.