Walmart Plans to Green Its Supply Chain

Walmart (WMT) has already announced a number of initiatives to reduce its greenhouse-gas emissions, and it will now expand those efforts to the companies that make up its huge supply chain.

Walmart said in a webcast on its corporate website that it plans to cut 20 million metric tons of greenhouse-gas emissions from its supply operations by 2015. The world's largest retailer claims that's "150% of our company's estimated global carbon footprint growth over the next five years." Walmart likened the amount of greenhouse gasses that its plan will eliminate to the annual emissions of 3.8 million cars.