For card-carrying environmentalists going green and avoiding corporate mega-brands go hand-in-hand. But as big companies embrace earth-friendly products and practices many eco-activists may be forced to tone down their anti-business rhetoric. This weekend’s New York Times highlights how Wal-Mart (WMT) the world’s biggest retailer (and affectionately nicknamed "Evil Destroyer of Communities" by some) has used its clout to push many of its competitors suppliers and fellow corporate titans towards green-friendly business. In 2005 Wal-Mart executives met with leading environmentalists to devise a scheme aimed at rejuvenating the firm’s flagging bottom line by going green. CEO H. Lee Scott Jr. ...