21.   Cows munch on it, dogs rummage in it, homeless children pick through it for rags and salvageable goods.

22.   Many Afghan children pick food, old cloth, paper, empty bottles and cans from the garbage dumps of Karachi.

23.   Of greater concern to experts is long-term, low-level damage that can show up decades after a child has picked his or her last berry.

24.   However, barefoot children still pick their way through streets littered with piles of garbage and swarming with flies.