Sir Douglas Mawson OBE, FRS, FAA, (5 May 1882 - 14 October 1958) was a British-born Australian geologist, Antarctic explorer, and academic. Along with Roald Amundsen, Robert Falcon Scott, and Sir Ernest Shackleton, he was a key expedition leader during the Heroic Age of Antarctic Exploration.
Mawson was born in England and was brought to Australia as an infant. He completed degrees in mining engineering and geology at the University of Sydney. In 1905 he was made a lecturer in petrology and mineralogy at the University of Adelaide. Mawson's first experience in the Antarctic came as a member of Shackleton's Nimrod Expedition (1907-1909), alongside his mentor Edgeworth David. They were part of the expedition's northern party, which became the first to attain the South Magnetic Pole and to climb Mount Erebus.
After his participation in Shackleton's expedition, Mawson became the principal instigator of the Australasian Antarctic Expedition (1911-1914). The expedition explored thousands of kilometres of previously unexplored regions, collected geological and botanical samples, and made important scientific observations. Mawson was the sole survivor of the three-man Far Eastern Party, which travelled across the Mertz and Ninnis Glaciers named after his two deceased companions. Their deaths forced him to travel alone for over a month to return to the expedition's main base.
Sir Ranulph Fiennes (born 7 March 1944), is a British explorer, writer and poet, who holds several endurance records.
Fiennes served in the British Army for eight years, including a period on counter-insurgency service while attached to the Army of the Sultanate of Oman. He later undertook numerous expeditions and was the first person to visit both the North Pole and South Pole by surface means and the first to completely cross Antarctica on foot. In May 2009, at the age of 65, he climbed to the summit of Mount Everest.
According to the Guinness Book of World Records in 1984, he was the world's greatest living explorer. Fiennes has written numerous books about his army service and his expeditions as well as books on explorers Robert Falcon Scott and Ernest Shackleton.