Mark’s insatiable curiosity has driven him to biochemistry, college-athletics, medical school, triathlon, internal medicine, teaching, Ironman races, writing, skydiving, motorcycling, martial arts, and mountain climbing.Some of his favorite fiction authors are J.R.R. Tolkien, Neal Stephenson, Tom Clancy, Stephen King, Dean Koontz, William Gibson, and Dan Simmons.He currently lives in the Pacific Northwest where he and his wife Jo enjoy hiking, climbing, stand-up paddle boarding (when Mark can stay upright), photography, and quiet walks in nature.