Explaining Brazil #44: How São Paulo killed its rivers

If you live in or have even been to São Paulo, it is likely that you’ve walked over a waterway without even noticing it. There are between 300 and 500 of them in Brazil’s biggest city, running through pipes extending from 1,500km to 4,000km. And the fate of the city’s main rivers doesn’t have a happy ending. They’ve become ugly and polluted – not at all fit for a São Paulo postcard.