They're members of the global-minded teens club: (left to right) Toluwanimi Sola-Adeyemi of Lagos, Chloe McGill of Seattle and Emine Arcasoy of Chapel Hill. Courtesy of Tolu Sola-Adeyemi, Chloe McGill and Emine Arcasoy. hide caption

Michael Elliott poses with a group of children during a trip to Segou, Mali. One reason for his optimistic outlook is the dramatic drop in deaths of children under age 5. Courtesy of ONE hide caption

Kimani Maruge became a first-grader at age 84. The Google doodle shows him in his school uniform. Courtesy of Google hide caption

The question of what to call "the developing world" is a developing debate. Jing Wei for NPR hide caption

These Pakistani children go to a makeshift school in a clay house, located in a poor neighborhood on the outskirts of Islamabad. Muhammed Muheisen/AP hide caption

Wilbur Sargunaraj visits a small house with a thatched roof, a medium-sized house and a "gigantic mansion" in his father's village. Produced by Wilbur Sargunaraj for NPR, John W. Poole and Ben de la Cruz/NPR. hide caption

The photographer thought it was a goat. The photo editor thought it was a goat. Sure looked like a goat to the author of this post. It turns out to be a sheep, in Dakar, Senegal. Claire Harbage for NPR hide caption

A vigil is held against violence in Cali, Colombia. The country has seen some 1,090 homicides this year. Luis Robayo/AFP/Getty Images hide caption

A boy lies on a mattress on the floor of Redemption Hospital, a holding center for Ebola patients in Monrovia, Liberia. Michel du Cille/The Washington Post/Getty Images hide caption

Wilbur Sargunaraj introduces us a barber in his father's home village in India. Wilbur Sargunaraj for NPR hide caption

Bafana Khumalo (in black jacket) carried his fight for "gender justice" to the White House today. He called on the U.S. to help fund abortions for women in other countries who've been raped. Courtesy of Dean Peacock hide caption

Wilbur Sargunaraj sings and dances about village life in India. Wilbur Sargunaraj for NPR hide caption

Baby Sesay, a traditional healer in Sierra Leone, treated a child who later died, apparently of Ebola, and then became sick herself and went to a care center. As this photo was taken, her body seized up and she nearly collapsed. David P Gilkey/NPR hide caption

Wilbur Sargunaraj "How to Use An Eastern Toilet" from YouTube Wilbur World Wide hide caption