TED Talks: The 4 commandments of cities

Creating livable cities is a vital part of how we will manage the exploding global population.  As more and more people around the world look to improve their standard of living, we will need a way to grow our cities in smart, efficient, and sustainable ways:

Eduardo Paes is the mayor of Rio de Janeiro, a sprawling, complicated, beautiful city of 6.5 million. He shares four big ideas about leading Rio — and all cities — into the future, including bold (and do-able) infrastructure upgrades and how to make a city “smarter.”


“[At] the end of the day, when we talk about cities, we talk about a gathering of people. And we cannot see that as a problem.”