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 |

 Futuristic water design that would provide water for food in the desert, featured in The Guardian in 2008. Photograph: Exploration Architecture. “What are the new developments in water? Are there…

Julia Bucknall |