In Morenci we have a person who makes twice-daily trips to look for returnable bottles in city trash cans. In poorer countries, the search goes much deeper:

As the world scrambles to save dwindling resources and halt global warming, a long-scorned population is becoming the latest hope in the environmental battle.

The unsung heroes are the impoverished trash pickers who fill the streets of countless cities around the developing world, searching garbage for cardboard, plastic bags and other treasure that can be sold and recycled.