Historian David McCullough and LA Times food editor Russ Parsons on this edition of Fresh Air McCullough is the Pulitzer-Prize winning author of Truman. His new book is the biography of founding father and second President of the United States. The book is John Adams. Food Editor for The Los Angeles Times, Russ Parsons, examines the science of cooking in his new book, How to Read a French Fry: and other Stories of Intriguing Kitchen Science.