The "greening" of corporate behemoths like Wal-Mart, DuPont, and Toyota has received much media attention in recent years. But consider small businesses: according to the U.S. Small Business Administration, of the estimated 27 million firms in the United States, 99.7 percent have fewer than 500 employees, 97.5 percent have fewer than 20, and more than 70 percent are "Mom-and-Pop" home-based concerns. Small businesses employ almost exactly half the private U.S. labor force--some 57.4 million people. Individually, they may be minimal energy users and waste emitters; collectively, however, their environmental impact is potentially huge. However, as the business literature repeatedly shows, businesses will face two obstacles in attempting to green their operations. These are (1) time (a shortage); and (2) information (a lack): time, because business owners have businesses to run; information, because accessing and understanding sometimes complex documentation takes, well, time. There would appear, then, to be an opportunity for librarians who understand better than most the intricacies of information gathering. This article presents a sampling of green business materials--books, magazines, DVDs, and web sites--available today. A few are not much more than simple checklists of office practices best suited to mom-and-pop green business newbies; a couple engage the scientific, vexingly complex aspects of business greening and would belong on a sustainability manager's desk; some could be considered "enviro-bios" of firms in the vanguard of environmentally, socially responsible behavior; and one or two titles offer a narrower focus.