Despite ongoing declines in fertility in many countries, the population of the world is experiencing a period of rapid expansion, and its size is expected to reach 10 billion by the end of the demographic transition. Three causes of this growth are identified and quantified: 1) fertility above...

Cover -- Front Matter -- Preface -- Contents -- Tables and Figures -- Executive Summary -- 1 Introduction -- 2 The Accuracy of Past Projections -- 3 Transitional Fertility -- 4 Posttransition Fertility -- 5 Mortality -- 6 International Migration -- 7 The Uncertainty of Population Forecasts --...