Fabiana Silva, 38, a former crack user who now collects recyclable materials, and her sons Brian (L), 8, and Breno, 14, have breakfast inside their house in Moinho favela, in Sao Paulo, Brazil, July 6, 2017. REUTERS/Nacho Doce SEARCH "NACHO RECYCLING" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.