As western forests continue to burn every summer, new technology is helping fight them. But Rick Cowell, a veteran hotshot firefighter, says the work has remained the same. Also in this show: producer Kenny Malone looks into the story behind a collection of salt shakers and a picture left behind in a Florida deposit box; how the rise of Hitler forced great physicists such as Max Born to flee Germany in the 1930s; and producer David Schulman goes on a search for digital sound that can compare to the acoustic sound of a Stradivarius violin.