If Walmart were in charge: Sourcing CO2 emissions reductions at least cost

Seemingly everyone has an opinion of Walmart, and quite often these opinions diverge. But just about everyone would agree that Walmart sources its products in a manner that permits it to sell them at very low prices. The primary reason is that Walmart is itself a great shopper—for any given product, the company looks globally for the best price and encourages suppliers to compete with one another.