Series of four articles on the problem of hybrid DNA molecules - February-March 1975 Series of articles on the Pioneer II mission to Jupiter - November-December 1975 "Icy Curtains May Hide a New Star" - 15 May 1975 "Picture of Electricity in Liquid Form" - 19 May 1975 San Francisco Chronicle"Scientists Split a 'Living Fossil' " - 28 May 1975 David Perlman
