For instance, Wal-Mart, the world's largest retailer, is now asking its 100,000 global suppliers to list the water consumed and greenhouse gases released during the manufacture of its products. Altogether, it is calculating 15 different items that are either "environmental costs" or "social costs." It then affixes a "green scorecard" to products for consumers 'perusal.
例如全球最大零售商美商沃爾瑪（Wal-Mart）於近日要求全球 10 萬家供應商，列出其產品生產過程中的用水量、溫室氣體減排目標等，共計 15 項與「環境成本」和「社會成本」相關的問題，並編制「綠色」評級，做為消費者選購產品時的參考。