John and Lynn go into the science of the most common but most mysterious procedure in medicine. For many of the 40 million Americans who undergo anesthesia each year, it is the source of great fear and fascination. Cool Science Radio speaks with Dr. Henry Jay Przybylo who has written a book called Counting Backwards: A Doctor's Notes on Anesthesia. Then the October edition of Scientific American published an article called Journey into Gunland. According to the article, More firearms do not keep people safe, hard numbers show. Why do so many Americans believe the opposite? We will speak with the article's author, Melinda Moyer.