Our relation to water is ambivalent: when we are thinking about it we imagine the crystal clear source of life, yet in the urban area our water treatment is a mess. Literally. But wasting water like that is no longer an option. It's time to rethink our wastewater treatment in a new efficient, organic and urbanic way. Attila Bodnár shows us his idea of water renewal gardens, where the water cycle closes in a beautiful way.

In the spirit of ideas worth spreading, TEDx is a program of local, selforganized events that bring people together to share a TEDlike experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, selforganized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are selforganized.* (*Subject to certain rules and regulations)