See the repost from NYT Blog...
Wal-Mart announced an initiative on Thursday that aims to achieve major reductions in greenhouse-gas emissions from its supply chain. As Stephanie Rosenbloom reports for The New York Times, the giant retailer said it would cut 20 million metric tons of emissions by the end of 2015 by focusing on popular product categories with the highest embedded carbon — milk, bread, meat, clothing. It said it would lean on its suppliers to rethink the sources, manufacturing processes, packaging and transportation of their goods.
Wal-Mart, which has taken an industry-leading role in environmental sustainability, says the move will prepare for a world of more expensive energy. But some critics contend that rather than change its business model, Wal-Mart pressures suppliers to change theirs, and possibly cut corners to maintain low costs.
Read more.. http://greeninc.blogs.nytimes.com/2010/02/25/wal-marts-green-mandate-to-suppliers/