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為大自然定個價！
881,221 views |
Pavan Sukhdev |
TEDGlobal 2011
• July 2011
Read transcript
我哋每日不假思索、毋須一分一毫咁消耗地球資源，但如果我哋真係要為真實價值找數，咁我哋用嘅時候又會唔會更小心同更警惕？Pavan Sukhdev 作為自然界嘅銀行家，為地球嘅寶庫評估價值。佢嘅圖表會令你大開眼界，重新反思空氣、水同樹林嘅成本……
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