São Paolo has a serious trash problem, which has been aggravated by the World Cup tourist influx.
Brazil’s largest city produces 18,000 tonnes of waste every day – that’s a staggering 6.5 million tonnes per year.
Many of São Paolo’s landfills have already reached capacity, and just 1% of waste is recycled.
A quiet army of 20,000 waste collectors roam the streets day and night, collecting recyclable material in carts called “carroças” and selling it.
These “catadores” are largely unrecognised for their crucial role in keeping São Paolo clean.
But with a project called Pimp My Carroça, street artist Thiago Mundano is striving to draw attention to their work.
Produced by Frederick Bernas and Enrique Castillo for BBC World News, July 2014.