The Roca brothers, three Spanish chefs, are U.N. goodwill ambassadors and creator of a very special chocolate. Courtesy of El Celler de Can Roca/SDGF hide caption

The nonviolent actions of Dr. King inspired young Kennedy Odede. In this March 21, 1965 file photo, King leads a civil rights march across the Edmund Pettus Bridge in Selma, Ala., to protest voting laws. AP hide caption

Researcher Christian Nawroth with Vern, who lives at the Buttercups Sanctuary for Goats in Kent, England. He thinks Vern was looking to be scratched. Courtesy of Christian Nawroth hide caption

One of the fleet of turboprop ATR planes from Pakistan International Airlines. After a Dec. 7 crash, the ATRs were grounded — and resumed flying (after a goat sacrifice) on Sunday. Farooq Naeem/AFP/Getty Images hide caption

Dr. Raj Panjabi has his blood pressure checked by a Liberian community health worker. Courtesy of Last Mile Health hide caption

A patient is pictured at a camp for diarrhea patients in Dhaka, Bangladesh. Among the past nominations for untold story: the need for vaccines to prevent "severe, deadly diarrhea" in this part of the world. Zakir Hossain Chowdhury/Barcroft Media via Getty Images hide caption

Prisoner guard Thomas Binamo wrote a ballad after his wife died suddenly: "I Will Never Stop Grieving For You, My Wife." Marilena Delli/Six Degrees Records hide caption

Dr. Paul Farmer, co-founder of Partners In Health, stands with Mirlande Estenale in front of what used to be her home in the town of Les Cayes, Haiti. Liz Campa/Partners In Health hide caption

Anthony Hamilton (right) is inspired by a goat. YouTube hide caption

Manisara holds her granddaughter. Courtesy of HBO hide caption

South Sudanese huddled for safety as fighting erupted in Juba on July 8. Eric Kanalstein/AP hide caption

Dancers are part of the #WhatIReallyReallyWant music video. YouTube hide caption

A goat in the barn at the Minnesota State Fair. Layne Kennedy/Getty Images hide caption

Boxes of aid items are stored at a disaster response center at Cotswold Airport in the United Kingdom. Stefan Wermuth/Getty Images hide caption

Demyte "Little Spot" was crowned the winner of Lithuania's goat beauty contest. Youtube hide caption