UNICEF predicts that Africa will have more than 4 billion people by 2100. Depending on how Africa's governments handle the upswing, that could mean a boom in the economy or a rise in mass poverty.
The most serious Ebola warning to date has been issued in East Africa. Nigeria confirmed at least 13 cases of the disease last week, and Kenya is now a “high-risk” country for the spread of the virus.
"Ebola can spread through physical contact," says Tomi Oladipo, Nigeria Correspondent at the BBC. "There’s a lot of caution now."
Oladipo says people are a lot more reluctant to shake hands. Many public places, like gyms, are providing hand sanitizer to try and help prevent the spread.
Many small food businesses have been affected as well.
"In Nigeria, we’ve got this kind of roast beef, which is sold in skewers and made out in the open. It’s popular and a delicacy around the country," says Olidapo. "A lot of the sellers we’ve spoken to say their sales have gone down. Some of them would have maybe 200 customers a day and now they’re getting about 50."
Listen to the full conversation in the audio player above.
What does it take to be a man? In writer Matt de la Peña's family, it's meeting your woman in a traditionally macho way. Until now, he hasn't told them how he really met his wife eight years ago.
Robert Siegel speaks with local political leader Patricia Bynes of Ferguson, Mo., about the clashes between residents and police taking place there since the weekend. Unrest erupted after an unarmed black teenager was shot and killed by police recently in the St. Louis suburb.
The community of Ferguson, Mo., remains on edge after a police shooting left an unarmed black teenager dead over the weekend. Clashes have erupted between protesters and police, and an officer was involved in another shooting overnight.
After a long period of supporting Islamist militants like the Islamic State, Turkish towns along the Syrian border are now cracking down. Souad Mekhennet co-wrote a story in The Washington Post about the formerly friendly attitude and its reversal. She speaks with Robert Siegel.
The era of Iraqi Prime Minister Nouri al-Maliki appears to be coming to an end after eight turbulent years. Haider al-Abadi, the man set to replace him, is not a previously well-known figure. NPR's Alice Fordham has interviewed him, and she tells Melissa Block more about him.
The International Mathematical Union has announced the four winners of its prestigious Fields Medal. The group includes Maryam Mirzakhani, the first woman to win the prize in its long history.
The Ebola outbreak has taken a particularly high toll on health workers, with more than 100 cases of health workers infected with the disease. West Africans are now requesting access to experimental drugs that have been used on Western health workers.
You might have heard a lot recently about non-Asian people donning makeup or clothing to appear Asian. But why is it that we're seeing so much of this phenomenon, widely referred to as "yellowface"?
The man running third in the race to be Brazil's next president has died in a plane crash. Eduardo Campos' small plane crashed in bad weather south of Sao Paulo as it was preparing to land.
Paid paternity leave is a luxury in the U.S. Just 10 to 15 percent of employers offer it, even though an increasing number of fathers want, and expect, time off with a new child.
Flood warnings are still in effect for other parts of New England after an early-morning downpour jeopardized commuters in New York. One town has been hit with more than a foot of rain.