Gerald Esch read an excerpt from his book, “Parasites and Infectious Disease: Discovery by Serendipity, and Otherwise” for a program on BBC Radio. His 2007 book deals with the role of serendipity in discovery as it applies to parasitism and infectious disease. The segment on the weekly BBC program, “Something Understood,” was about how serendipity — finding something unexpected and useful while searching for something else entirely — influences and molds our lives. Esch’s book was featured along with selections from Sigmund Freud and Lewis Carroll. Read more.