Imagining a sustainable future - Alex Steffen

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View full lesson: http://ed.ted.com/lessons/alex-steffen-sees-a-sustainable-futureWorldchanging.com founder Alex Steffen argues that reducing humanity's ecological footprint is especially vital now, as the western consumer lifestyle spreads to developing countries.Talk by Alex Steffen. Learn more about your ad choices. Visit megaphone.fm/adchoices

Episode metadata supplied by the publisher feed · Published Aug 8, 2026

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Imagining a sustainable future - Alex Steffen

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