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Alex Steffen:
Alex Steffen vede un viitor durabil

TEDGlobal 2005 · 17:34 · Filmed Jul 2005
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Alex Steffen, fondatorul site-ului Worldchanging.com, argumentează că reducerea amprentei ecologice a umanităţii este incredibil de vitală acum, când stilul de viaţă occidental se răspândeşte în ţările în curs de dezvoltare.

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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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