A young boy vanished in the desert one year ago. Why are there still no clues?

By Hilary Whiteman, CNN (CNN) — Little Gus Lamont was wearing a gray sun hat over his long blond curls and a blue Minions T-shirt as he played in the sand outside his grandparents’ house in the Australian outback last September. When his grandmother went to check on him, he was gone. The disappearance of