He was responsible for the cultural editorials published in the famous Roman daily journal, Il Tempo. Marino is the author of the book Christopher Columbus and the betrayed Pope, published in four editions: 1st through 3rd (Newton Compton, 1991), 4th (RTM Multimedia, 1997). The fourth edition is adjourned and expanded, with an introduction by Professor
Marino also wrote "Christopher Columbus, the Last of the Templars" (Sperling & Kupfer and Rai Eri, 2005). The text has been translated in seven countries, including the United States and Canada.