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Alex Steffen:
亞力克斯•史蒂芬(Alex Steffen): 城市的共享未來

TEDGlobal 2011 · 10:13 · Filmed Jul 2011
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城市該怎樣助力於拯救未來?亞力克斯•史蒂芬展示了一些很酷的綠色社區計劃,在減少車輛使用的同時,又能擴展我們的需求。

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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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