Social context of science / Devra Lee Davis -- Popular epidemiology in three contaminated communities / Richard W. Clapp -- Integrating environmental justice and the precautionary principle in research and policy making / Rachel Morello-Frosch, Manuel Pastor Jr., and James Sadd -- Precautionary principle and public health trade-offs / Joel A. Tickner -- Biotechnology at the dinner table / Sheldon Krimsky and Nora K. Murphy -- Citizen activism for environmental health / Lois Gibbs -- Environmental justice organizing for environmental health / Penn Loh -- Should one start or continue a line of research? / Raymond Richard Neutra -- Children's environmental health / Anjali Garg and Philip J. Landrigan -- Medical activism and environmental health / Michael McCally -- Corporate responsibility for toxins / Gerald Markowitz and David Rosner -- Policy issues in environmental health disputes / Phil Brown ... [et al.]