(Recorded at TED U 2009, February 2009, in Long Beach, California. Duration: 04:04.)
TED LINK: Why you should listen to him >>
Get the slide deck from this talk >>
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Watch: How to Grow Your Own Fresh Air
(Recorded at TED U 2009, February 2009, in Long Beach, California. Duration: 04:04.)
TED LINK: Why you should listen to him >>
Get the slide deck from this talk >>