IN THIS ISSUE: Toward a National Program for Energy Research and Development: A Report on the Cornell Workshops /2 (Groundwork for the government's announced $10 billion program was laid at the Cornell Workshops on the Major Issues of a National Energy Research and Development Program, held in Washington last fall under auspices of the Atomic Energy Commission. A summary article reports on the findings and recommendations of some eighty leadingexperts from government, industry, research organizations, and the universities.) ... The Hydrogen Economy: Solution to the Energy Problem? /13 (Prospects for the future of hydrogen as the basis of a national energy-supply system are analyzed by Simpson Linke. professor of electrical engineering, who organized the Cornell International Symposium and Workshop on the Hydrogen Economy, sponsored by the National Science Foundation and held last summer on the campus.) ... The Environmental Impact of Nuclear Energy /23 (The quantitative assessment of nuclear hazards is discussed by K. Bingham Cady, associate professor of nuclear science and engineering, who advocates the inclusion of biological and environmental as well as production costs in analyses of energy producing industries. Cady, a specialist in nuclear physics and engineering, participates research connected with the Cornell Energy Project, which is sponsored by NSF/RANN.) ... Commentary /34 (Issues and options of energy policy were explored by representatives of governmental, industrial, and research groups in a spring lecture series sponsored by the College of Engineering.) ... Register /39