Front Matter -- Preface -- Contents -- Welcome -- A Celebration of 50 Years of Health and Environmental Research -- The Biological and Environmental Research Program at 50 -- Keynote Address: Impact of Biotechnology and Environmental Research on Science and Society in the 21st Century -- Part I Enabling Research for Science and Technology: Biotechnology -- Biotechnology and the Human Genome Project -- Part II Biotechnology for a Healthy Citizenry -- Biologic Imaging: From Mouse Genome to Human Disease -- Health-Effects Research at the Crossroads: Molecular-Based Tools for Biologic Dosimetry and Individual Susceptibility -- Part III Protecting the Environment -- Atmospheric Carbon Dioxide: Contemporary Budget, Historical Context, and Implications for the Future -- Restoring the Environment Via Bioremediation and Molecular Sciences: Prospects for Better Understanding and New Science-Based Solutions -- Science Policy and Society: Current Challenges, Future Priorities -- Part V Biological and Environmental Research Program Recognition Awards.