Energy and society / David Pimentel and Marcia Pimentel -- Energy and power / David Pimentel and Marcia Pimentel -- Solar energy in natural and managed ecosystems / David Pimentel and Marcia Pimentel -- Ecological system, natural resources, and food supplies / David Pimentel and Marcia Pimentel -- Manipulating ecosystems for agriculture / David Pimentel and Marcia Pimentel -- Hunter-gathers and early agriculture / David Pimentel and Marcia Pimentel -- Early livestock systems and animal power / David Pimentel and Marcia Pimentel -- Livestock production and energy use / David Pimentel -- Energy use in fish and aquacultural production / David Pimentel, R.E. Shanks and J.C. Rylander -- Energy use grain and legume production / David Pimentel and Marcia Pimentel -- Energy use in fruit, vegetable, and forage production / David Pimentel and Marcia Pimentel -- Energy inputs in crop production: comparison of developed and developing countries / David Pimentel, R. Doughty, C. Carothers, S. Lamberson, N. Bora and K. Lee -- Pesticide impacts on the environment / David Pimentel -- Water resources: agricultural and environmental issues / David Pimentel, B. Berger, D. Filberto, M. Newton, B. Wolfe, E. Karabinakis, S. Clark, E. Poon, E. Abbett and S. Nandagopal -- Soil erosion: a food and environmental threat / David Pimentel -- Conservation of biological diversity in agricultural, forestry, and marine systems / David Pimentel, T. Petrova, M.Riley, J. Jacquet, V. Ng, J. Holloway, and E. Valero -- Food processing, packaging, and preparation / David Pimentel and Marcia Pimentel -- Transport of agricultural supplies and food / David Pimentel and Marcia Pimentel -- Renewable energy: current and potential issues / David Pimentel, M. Herz, M. Whitecraft, M. Zimmerman, R. Allen, K. Becker, J. Evans, B. Hussan, R. Sarsfield, A. Grosfeld and T. Seidel -- Biomass: food versus fuel / David Pimentel, A.F. Warneke, W.S. Teal, K.A. Schwarb, N.J. Simcox, D.M. Ebert, K.D. Baenisch, and M.R. Aaaron -- Ethanol production using corn, switchgrass, and wood and biodiesel production using soybean and sunflower / David Pimentel and T. Patzek -- U.S. energy conservation and efficiency: benefits and costs / David Pimentel, A. Pleasant, J. Barron, J. Gaudioso, N. Pollock, E. Chae, Y. Kim, A. Lassiter, C. Schiavoni, A. Jackson, M. Lee and A. Eaton -- Summing up: options and solutions / David Pimentel and Marcia Pimentel.