Tonlé Sap, Cambodia Ratana, 12, rows to school, picking up friends along the way. Together they try to clear the rubbish littering the lake, taking it away to be disposed of. In a series for Save the Children, the renowned photographer Linh Pham documented Cambodian schools on the frontline of the climate crisis. Pupils living on Tonlé Sap lake study environmental issues affecting their families’ lives. They take to boats with banners and loud hailers, asking villagers to help protect their environment.