Sofia Valdez did as much as she could for her family and friends and her whole neighborhood. A dreamer. A doer. A real-life go-getter. Most people like good, but Sofia liked better. In the newest picture book in the mega-bestselling Questioneers series, Sofia Valdez fights for change and finds her voice as a community leader! Every morning, Abuelo walks Sofia to school . . . until one day, when Abuelo hurts his ankle at a local landfill and he can no longer do so. Sofia misses her Abuelo and wonders what she can do about the dangerous Mount Trashmore. Then...