Birth of the Road Map, Attack of the Killer Bees, Invention of the Gas Mask

Host Don Wildman examines an iconic road sign that was part of a revolutionary plan to bring order to America's roads, a tiny bee specimen that unleashed a swarms of killer insects and a wave of panic on two continents, and an unusual gas mask that was invented by a brave and pioneering man whose bold act of courage proved his device's worth and broke down racial barriers in the process. Hosted on Acast. See acast.com/privacy for more information.