📍 ‘Good lord, what a smell’: can Brazil’s biggest city save a vital source of water from sewage, bacteria and organised crime?

As São Paulo faces a climate-induced water crisis, campaigners are fighting to reverse the impact of pollution and illegal deforestation on its largest reservoirIn a small motorboat laden with water-monitoring equipment, biologist Marta Marcondes and community activist Wesley Silvestre Rosa cross Billings reservoir on the far southern edge of São Paulo. Bright white herons glide over the water, wh…