Dr Charles Houston, High-Altitude Medicine Pioneer
K2, The Savage Mountain was a boyhood favorite that may account for a touch of adulthood acrophobia. In the classic book, expedition leader and doctor Charles Houston, who died last week aged 96, recounts his last tragic climb in chilling detail. Houston went on to conduct groundbreaking research on the physiology and treatment of altitude sickness. Every aviator and mountaineer today owes him a debt of gratitude.