The mega-retailer gets only 3 percent of its power from clean sources, and ranks just behind Chevron on the list of biggest climate polluters.
The retail giant already controls more than 25 percent of the U.S. grocery market, and with its new organic label, it's aiming to control even more.
Environmental Defense Fund, a big cheerleader for Walmart's sustainability efforts, gets about an eighth of its budget from the Walton family, the same folks who control Walmart.
Cape Cod is the rare community that considers regional economic impacts when weighing big-box retail proposals, and that makes all the difference.
Cities where small businesses account for a relatively large share of the economy have stronger social networks and more engaged citizens.
The retailer says its suppliers are going green, but as a recent factory fire revealed, Walmart won't even divulge who its suppliers are.
The Walton Family Foundation has become one of the largest environmental grantmakers in the U.S. -- and it's steering its money to groups that play nice with Walmart.
Walmart evaded environmental protections and other rules in Mexico by paying out bribes. As punishment, the company should have to give up many of its Mexican stores.
The world's biggest retailer has gotten an undeserved free pass from many environmentalists. It's time to take a tougher line and set a higher standard, argues Stacy Mitchell in the conclusion to her series on Walmart's greenwashing.