Veteran to janitor to physicist: how Josh Carroll changed his life with YouTube

Could you learn trigonometry in 3 weeks if your life depended on it? In this episode of TechFirst with John Koetsier we chat with Josh Carroll, who volunteered with the US Army after 9/11 before he finished high school,  did 3 tours of duty in Afghanistan, then came back and worked, among other jobs, as a high school janitor. In the library of the high school he was cleaning he found A Brief History of Time, by Dr. Stephen Hawking, and rediscovered his love of science. Then he taught himself advanced math via YouTube on his path to becoming a physicist ... Want more? Full transcript will be here: https://johnkoetsier.com/category/tech-first/ Follow on Twitter: https://twitter.com/johnkoetsier Watch the video on YouTube: https://www.youtube.com/c/johnkoetsier?sub_confirmation=1