Diego Saldanha, a former fruit vendor from Curitiba, Paran�, developed a system ten years ago to trap waste in the Atuba River, near his home. "I've lived by the river all my life, and 30 years ago it was clean. I used to swim and fish there. Today, the river is dirty and polluted," he says. Leia mais (08/18/2026 - 11h10)