Can the Rio Olympics lead to greener favelas?

As part of the legacy of the 2016 Olympic Games, the municipal government of Rio de Janeiro has committed to urbanizing its sprawling slums by 2020. But the results to date haven't lived up to expectations.

One year from today, the city of Rio de Janeiro will kick off the 2016 Olympic Games, bringing tens of thousands of spectators to the city, and billions of dollars into Brazil. Traditionally, in the run-up to every Olympic Games, the host city makes a big show of highlighting the positive impact the Games will have on the city's infrastructure, services, and economy.

In some cases, those promises bear fruit: Barcelona is widely recognized as a successful example of leveraging Olympics-sized spending for the greater good. Residents of many other Games host cities, however, have found the experience to be a mixed blessing at best. Starting today, we are taking a look at how Rio is preparing for the Games, and how these preparations will affect businesses and people across the city.