Machine generated contents note: 1 One Vision of the Year 2050 1 -- 2 The New World of Population Policy 23 -- 3 Putting Cairo to Work 52 -- 4 U.S. Population Activism in the New Century 80 -- 5 A Warming World 102 -- 6 International Climate-Change Negotiations 135 -- 7 Creating a Stable Atmosphere 165 -- 8 Population and Climate Change Together 187 -- Afterword: Dancing in the Crowded Greenhouse 203.