ITS water is thick and blackened; along its banks are piles of plastic garbage, vegetable leftovers, and food remnants. These piles of rubbish protrude into the lake, reducing its surface width by 5 meters. In a glimpse, this Ria Rio Lake looks like a giant waste containment pool. There is nothing wonderful with the smell either. Foul stench fills the air, presenting a great pain for the nose.

And it’s not just that. The lake’s size keeps de