Driving through Sao Paulo yesterday, I was struck by the power of cities. While cities are part of the climate change problem, they need to be part of the solution too. They are bigger and more…

Dan Hoornweg |

I was part of a ``historic’’ moment in Xcaret, on the Mayan Riviera of Mexico, earlier this month. Here representatives of indigenous organizations worldwide had gathered together with government…

Fabio Pittaluga |