Population hits 8 billion, creating more issues

The world’s population will likely hit an estimated 8 billion people on Tuesday, according to a United Nations projection, with much of the growth coming from developing nations in Africa.

Among them is Nigeria, where resources are already stretched to the limit. More than 15 million people in Lagos compete for everything from electricity to light their homes to spots on crowded buses, often for two-hour commutes each way in this sprawling megacity. Some Nigerian children set off for school as early as 5 a.m.

And over the next three decades, the West African nation’s population is expected to soar even more: from 216 million this year to 375 million, the U.N. says. That will put Nigeria in a tie for third place with the United States after India and China.

The U.N.’s Day of 8 Billion milestone Tuesday is more symbolic than precise, officials are careful to note in a wide-ranging report released over the summer that makes some staggering projections.

The upward trend threatens to leave even more people in developing countries further behind, as governments struggle to provide enough classrooms and jobs for a rapidly growing number of youth, and food insecurity becomes an even more urgent problem.

Nigeria is among eight countries the U.N says will account for more than half the world’s population growth between now and 2050 — along with fellow African nations Congo, Ethiopia and Tanzania.

It projected the world’s population will reach around 8.5 billion in 2030, 9.7 billion in 2050 and 10.4 billion in 2100.

Other countries rounding out the list with the fastest growing populations are Egypt, Pakistan, the Philippines and India, which is set to overtake China as the world’s most populous nation next year.

In Congo’s capital, Kinshasa, where more than 12 million people live, many families struggle to find affordable housing and pay school fees. While elementary pupils attend for free, older children’s chances depend on their parents’ incomes.

Rapid population growth also means more people vying for scarce water resources and leaves more families facing hunger as climate change increasingly impacts crop production in many parts of the world.

Still, experts say the bigger threat to the environment is consumption, which is highest in developed countries not undergoing big population increases.

According to the U.N., the population in sub-Saharan Africa is growing at 2.5% per year — more than three times the global average. Some of that can be attributed to people living longer, but family size remains the driving factor. Women in sub-Saharan Africa on average have 4.6 births, twice the current global average of 2.3.

Families become larger when women start having children early, and 4 out of 10 girls in Africa marry before they turn 18, according to U.N. figures. The rate of teen pregnancy on the continent is the highest in the world — about half of the children born last year to mothers under 20 worldwide were in sub-Saharan Africa.

The U.N. report put the current U.S population at 337 million, reaching 375 million in 2050. The population growth rate in 2021 was just 0.1%, the lowest since the country was founded.

Charles Kenny, a senior fellow at the Center for Global Development in Washington, says environmental concerns surrounding the 8 billion mark should focus on consumption, particularly in developed countries.

“Population is not the problem, the way we consume is the problem — let’s change our consumption patterns,” he said.