Wal-Mart is not only the world's largest company; it is also the largest company in the history of the world. Though 70 percent of Americans now live within a 15-minute drive of a Wal-Mart store, we have not even begun to understand the true power of the company and the many ways it is shaping American life. We know about the lawsuits and the labor protests, but what we don't know is how profoundly the "Wal-Mart effect" is shaping our lives.

Fast Company senior editor Fishman, whose revelatory cover story on Wal-Mart generated the strongest reader response in the history of the magazine, takes us on an unprecedented behind-the-scenes investigative expedition deep inside the many worlds of Wal-Mart. Fishman penetrated the secrecy of Wal-Mart headquarters, interviewing 25 high-level ex-executives. He journeyed into the world of a host of Wal-Mart's suppliers to uncover how the company strong-arms even the most established brands. And he journeyed to the ports and factories, the fields and forests where Wal-Mart's power is warping the very structure of the world's market for goods.

Wal-Mart is not just a retailer anymore, Fishman argues. It has become a kind of economic ecosystem, and anyone who wants to understand the forces shaping our world today must understand the company's hidden reach.