Kholoud Sukkariyeh (right) and Nidal Darwish, who got married in defiance of Lebanon's ban on civil unions, walk past Beirut's landmark Pigeon Rock in 2013. Joseph Eid/AFP/Getty Images hide caption

itoggle caption Joseph Eid/AFP/Getty Images

National Geographic writer and explorer Dan Buettner studies the world's longest-lived peoples and their lifestyles. Courtesy TEDxTC hide caption

itoggle caption Courtesy TEDxTC

In this photo released Thursday by a website run by Islamic State militants, damaged Syrian helicopters sit at Palmyra air base, which was captured by ISIS after a battle with the Syrian government forces earlier this week. Uncredited/AP hide caption

itoggle caption Uncredited/AP

First-graders take soccer class at the Nandulehe Elementary School in suburban Beijing. The school is one of 20,000 that's launching a national soccer curriculum in the next five years. It's part of a government plan to raise China's soccer skills and eventually, China's leaders hope, host and win a World Cup. Anthony Kuhn/NPR hide caption

itoggle caption Anthony Kuhn/NPR

Village chiefs, residents and government officials take to the streets to celebrate the Chienge district's accomplishment of bringing sanitation to every home. Mark Maseko/Courtesy of UNICEF Zambia hide caption

itoggle caption Mark Maseko/Courtesy of UNICEF Zambia

Lt. Gen. Abdul Raziq is the police chief widely credited with bringing much greater security to the southern Afghan city of Kandahar. But critics accuse him of human rights abuses including torture and extrajudicial killings. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR