View full lesson: <a href="http://ed.ted.com/lessons/alex-steffen-sees-a-sustainable-future">http://ed.ted.com/lessons/alex-steffen-sees-a-sustainable-future</a> Worldchanging.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 <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

View full lesson: http://ed.ted.com/lessons/alex-steffen-sees-a-sustainable-future Worldchanging.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

View full lesson: <a href="http://ed.ted.com/lessons/alex-steffen-sees-a-sustainable-future" rel="noopener noreferrer">http://ed.ted.com/lessons/alex-steffen-sees-a-sustainable-future</a> Worldchanging.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 <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

Imagining a sustainable future - Alex Steffen

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TED-Ed’s mission is to create lessons worth sharing. Feed and expand your curiosity with our award-winning animated shorts - published on YouTube and available with supplemental learning materials on ed.ted.com. Want to suggest an idea for a TED-Ed animation, nominate an educator or animator? Visit our website at: http://ed.ted.com/get_involved. Consider backing us on Patreon. By doing so, you directly support our nonprofit mission to create free, high-quality educational content: https://www.patreon.com/teded For more information on using TED-Ed content for commercial purposes (e.g. employee learning, in a film, or in an online course), please submit a Media Request using this link: https://media-requests.ted.com/

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Imagining a sustainable future - Alex Steffen

Imagining a sustainable future - Alex Steffen