Acknowledgments Reflections on a Life of Energy Studies 1 Long-term Trends and Achievements 1 2 Energy Linkages 63 3 Against Forecasting 121 4 Fossil Fuel Futures 181 5 Nonfossil Energies 239 6 Possible Futures 317 Units and Abbreviations 375 Prefixes 377 Acronyms 379 References 383 Index 419