Mark Barnes is a longtime educator, author, and entrepreneur. An avid reader and researcher, he became interested in–perhaps even a bit obsessive about–health, fitness, and longevity when he joined the After-50s club in 2014. Mark has written 10 books, including ROLE Reversal (ASCD, 2013), Assessment 3.0 (Corwin, 2015), Hacking Education (Times 10 Publications, 2015)--the first book in the internationally-renowned Hack Learning Series–and Hacking Life After 50 (Times 10 Publications, 2023)--the first book in the Hack Learning Life Series. Mark is on a mission to live to a healthy 100 and longer. Follow his journey on Facebook at After 50s Life and on X @markbarnes19.
