Arjun is an eminent researcher on energy, nuclear weapons, and environmental issues. His work is strongly endorsed by Helen Caldicott, M.D., among many others. He is president of the Institute for Energy and Environmental Research, and author of Carbon-Free and Nuclear Free—A Roadmap for U.S. Energy Policy and Ecology and Genetics: An Essay on the Nature of Life and the Problem of Genetic Engineering, among other books and pamplets.