Maine-native Hanley Denning saw poverty and desperation in its ugliest form, and refused to turn a blind eye. A former track star at Bowdoin College, Denning was struck by what she saw at the Guatemalan City dump: garbage pickers competing with vultures for the food dumped by trucks, toddlers playing amidst rats. The experience prompted her to, as Mother Teresa said, "find her own Calcutta." Hanley called her family in New England and asked them...