Girls carrying school bags provided by UNICEF walk past destroyed buildings on their way home from school on March 7 in the rebel-held al-Shaar neighborhood of Aleppo, Syria. So many people have fled the city and so much of its infrastructure has been destroyed that nighttime satellite images show 97 percent less light there compared with four years ago.
Zein al-Rifai/AFP/Getty Images
A health worker weighs a Somali baby on scales at a medical clinic in Mogadishu. Babies in Somalia have the highest risk of dying within the first 24 hours after birth.
Carl de Souza/AFP/Getty Images
A young Syrian girl wiped her tears after not being allowed entry to Turkey last month. Thousands of Syrians have fled to neighboring countries to escape the civil war raging in their nation.
Aris Messinis /AFP/Getty Images