Walmart, Nike, Starbucks embrace clean energy

Walmart, Nike and Starbucks, among other large firms, are committing to only purchasing energy that comes from solar and wind. Nine companies, most from the Fortune 500, took a pledge last week to join the "RE100," a campaign by the nonprofit organization The Climate Group and environmental data company CDP. These new pledges are in the company of other large firms like Johnson & Johnson, Goldman Sachs, and Procter & Gamble. Many of these companies want to cut their carbon emissions as a strategic business decision. Story