msnbc.com story: War, corruption swell number of Afghan street kids
Majid Saeedi / Getty Images
Afghan boys work at a factory which recycles plastic, Sept. 15, 2010 in Herat, Afghanistan. More than half of Afghanistan's population of 24 million is under the age of 18. UNICEF estimates that 30% of primary school age kids are often the single source of income for their families.