In this interview Harry Van Loon discusses topics such as: climatology, the history of the National Center for Atmospheric Research (NCAR), research on El Nino-Southern Oscillation (ENSO), the North Atlantic Oscillation (NAO), the solar influence of climate; Jan Taljaard; weather maps of the Southern Hemisphere; serving in World War II; going to the Massachusetts Institute of Technology (MIT); Hurd Willett; working on the Southern Hemisphere project; going to Antarctica; International Geophysical Year (IGY); Harry Wexler; Will Kellogg; Akira Kasahara; Colorado Research Associates; Warren Washington.