Sir Ranulph Fiennes, born in 1944, is an English explorer and writer who holds several endurance records and a reputation to match: as far back as 1984, Norris McWhirter, founding editor of the Guinness Book of Records, named him the greatest living explorer. He served eight years in the British Army, including counter-insurgency service attached to the Army of the Sultanate of Oman, before the expeditions took over.
The record since reads like a list of things previously assumed impossible: first to reach both the North and South Poles by surface travel, first to cross Antarctica entirely on foot, and, in May 2009 at the age of 65, a successful summit of Everest. Alongside the journeys he has written prolifically – accounts of his army years and his expeditions, together with books on the polar explorers Robert Falcon Scott and Ernest Shackleton.