The advancement of science, invention, and discovery has often been pushed ahead by lone wolves who were willing to attempt impossible, outrageous, or dangerous tasks. Learn about mathematicians who devoted decades to mind-numbing calculations of a single problem. Learn how individuals started with 10 tons of pitchblende to extract one milligram of radium by hand. Marvel at individuals who said “I’ll just test my new vaccine by injecting myself with the disease.” David Crossley presents some jaw-dropping examples of successes and failures by those who dared.

David Crossley has degrees in both electrical and mechanical engineering; he retired from a 40-year career in the aerospace arena. He taught electromagnetics at New Mexico State University, performed electronic warfare operations in five war zones with the Air Force out of Kirtland Air Force Base, and is now playing oboe with the Albuquerque Philharmonic.