Fabiana da Silva, 38, a former crack user who now collects recyclable materials, pushes her cart loaded with recyclables, accompanied by her son Brian, 8, her nephews Jean, 9, and Igor, 10, and their dog Bobby, on Paulista avenue in Sao Paulo, Brazil July 4, 2017. REUTERS/Nacho Doce SEARCH "NACHO RECYCLING" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.