Preface -- Introduction: eight keys to ending poverty -- Only business can end poverty -- "The poor are very different from you and me" -- What is poverty? -- What can government and philanthropy do? -- Why business is best equipped to fight global poverty -- Zero-based design and the bottom billions -- What to do before you launch your business -- The ruthless pursuit of affordability -- Zero-based design in practice : low-cost drip irrigation -- Design for the market -- Zero-based design in practice : a cautionary tale -- Design for scale -- Zero-based design in practice: safe drinking water for small villages -- Design for delivery the last 500 feet -- Building a mission-driven global business -- Opportunities abound -- It's your turn now -- Resources : takeaways and what we say to critics -- Notes -- Acknowledgments -- About the authors -- Index.