This 2007 email exchange between Steve Berry (University of Chicago), Peter Bradford (former U.S. Nuclear Regulatory Commissioner and senior utility regulator), and Amory Lovins elucidates the case for and against nuclear power in relation to climate and the environment. Lovins argues that energy efficiency measures are the best approach to powering a climate-safe, prosperous global economy. Lovins also argues for the use of micropower, not nuclear power, as a primary source of global energy. Berry agrees with Lovins on the fundamentals on energy efficiency, but claims that no single method of energy generation will accomplish the goal of providing energy with minimal environmental impact.