Edward Lorenz and Phil Thompson interview each other about their educational background, experiences at the National Center for Atmospheric Research (NCAR), and their research. Ed Lorenz, Professor, Massachusetts Institute of Technology and frequent NCAR visitor, discusses his involvement with the problem of available potential energy, his work with Eric Kraus on air/sea interactions, and his scientific contributions including his research on predictability and long range forecasting and the development of the Lorenz attractor sets. He comments on the staff size and atmosphere for conducting research at NCAR in the early 1960s. Phil Thompson, NCAR senior scientist, talks about the early influences of Jule Charney, John von Neumann, and Carl-Gustaf Rossby on his career in meteorology; the development of the Numerical Weather Prediction Model; atmospheric modelling of turbulence using computers; and his experiences as an NCAR administrator and scientist.