The Syrian refugee crisis, which began in 2011, is one of the most pressing disasters in the world today, with its effects reverberating around the globe. By the end of 2015, more than 7.6 million of the country's people had been internally displaced and 4.3 million were registered refugees. The number of internally displaced persons and refugees amounts to about half of Syria's precrisis population. Thousands have died while trying to reach safety. Due to the large humanitarian response, there is now a wealth of available information on refugees' income and expenses, food and nutrition,...