Contents -- Preface -- Part I: The New Geography Hypothesis -- 1. Massive Global Income Inequality: When Did It Arise and Why Does It Matter? -- 2. The Reversal of Historical Inequality Trends -- Part II: Measurement -- 3. How Is National Income Measured, and Can We Trust the Data? -- 4. Inequality: What It Is and How It Is Measured -- Part III: Evidence -- 5. What We Already Know -- 6. Income Inequality across Nations in the Late Twentieth Century -- 7. Weighted versus Unweighted Inequality: Key to the Divergence Debate -- 8. Continental Divides: Asia, Africa, and the Reversal of the Trend -- 9. Change in Income Inequality within Nations -- Part IV: Explanations and Predictions -- 10. Causes of the Inequality Transition -- 11. The Future of Global Income Inequality -- Epilogue: Does Rising Income Bring Greater Happiness? -- Notes -- References -- Index.