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Alex Steffen:
Alex Steffen imagine un futur durable

TEDGlobal 2005 · 17:34 · Filmed Jul 2005
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Le fondateur de Worldchanging.com, Alex Steffen nous explique à quel point il est vital de réduire l'empreinte écologique de l'humanité, à l'heure où le mode de vie consumériste occidental s'étend aux pays en développement.

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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

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