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Alex Steffen:
Alex Steffen a fenntartható jövőről

TEDGlobal 2005 · 17:34 · Filmed Jul 2005
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Alex Steffen a Worldchanging.com alapítója szerint az ökológiai lábnyom csökkentése életbevágóan fontos, főként manapság, amikor a nyugati szokások megjelennek a fejlődő országokban is.

Planetary futurist
Alex Steffen explores our planet's future, telling powerful, inspiring stories about the hard choices facing humanity ... and our opportunity to create a much better tomorrow. Full bio
This talk was presented at an official TED conference, and was featured by our editors on the home page.

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