A girl and her mother scrounge through garbage in Rach Gia, Vietnam. Some 200 families - three generations of Cambodians - live on two dumps there.
What the children eat and what they wear is often what they get from the trash.
The children didn't know flip-flops were supposed to match until volunteers brought them new ones, said CNN's Natalie Allen.
The people who live on the dumps left Cambodia in the 1970s to escape the brutal Khmer Rouge regime.
The extreme poverty makes children especially susceptible to human traffickers. Some parents sell their kids, trusting that the buyer has good intentions.
This home is really just a few tarps strung together for shelter.
Today, many of the children are able to attend a school started by the Catalyst Foundation, a nonprofit started by a Vietnamese-American.
The children at the school learn how to avoid traffickers. They also get a chance to have fun on their first playground.