Ivan Papanin was a Soviet polar explorer and led the expedition, in which people probably entered the North Pole for the first time in 1937.
Alfred Wegener was a meteorologist and polar and geoscientist. His most important contribution is his theory of continental shift.
Edith “Jackie” Ronne was the first woman to take part in an Antarctic expedition with her husband Finn Ronne, to work there and overwinter.
Carsten Borchgrevink was not the first person on the Antarctic continent. But the first one to overwinter there.
Frederick Cook was a medical doctor. Cook accompanied Robert Peary on an expedition to Greenland. Later, they fought over the North Pole and its discovery.