Table of contents : Cover......Page 1 Table of Contents......Page 2 SA Perspectives: Science at the Crossroads......Page 4 On the Web......Page 5 Letters to the Editors......Page 6 50, 100 and 150 Years Ago......Page 8 News Scan......Page 9 Skeptic: Rumsfeld's Wisdom......Page 21 Insights: A Proposition for Stem Cells......Page 22 The Climax of Humanity......Page 24 Human Population Grows Up......Page 28 Can Extreme Poverty Be Eliminated?......Page 36 Sustaining the Variety of Life......Page 46 More Profit with Less Carbon......Page 54 The Big Potential of Small Farms......Page 64 Public Health in Transition......Page 72 Economics in a Full World......Page 80 How Should We Set Priorities?......Page 88 Working Knowledge: Private and Cool......Page 96 Reviews: Everything That Isn't Nature......Page 98 Anti Gravity: Go Fourth......Page 101 Ask the Experts......Page 102