The 30 Cleanest Cities in the World

Curitiba, Brazil

While Brazil is hardly ever referred to as a clean country, there is one exception – the city of Curitiba. Local government encourages its residents to keep the city clean by letting them to exchange bags of sorted waste for food or bus tokens. Consequently, up to 70% of the city’s trash is recycled. The city’s paper recycling, for example, saves the equivalent of 1,200 trees a day.