Episode 51: This week on “Dan’s Talks,” Dan speaks with Karl Grossman, co-author of Cold War Long Island. The book, co-written by Christopher Verga, delves into the often overlooked history of the Cold War era in Nassau and Suffolk counties. Grossman has specialized in investigative reporting in a variety of media for more than 50 years and has hosted the nationally-aired TV program Enviro Close-Up for over 30 years.