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On April 6, 1909, American explorers Robert Peary and Matthew Henson claimed to reach the North Pole. Peary was supported and funded by the National Geographic Society, which verified his claim. It has been in dispute ever since.
 
Peary never made his navigational records available for review, and other members of the expedition could not verify the route. Skeptics have noted the remarkable speed with which the expedition traveled once Capt. Bob Bartlett, the only other navigator besides Peary, left the crew. Peary reported more than doubling the amount of territory covered daily as soon as Bartlett left the expedition.
 
Nonetheless, many explorers support Peary's claims. National Geographic conducted extensive studies of the photographs Peary took, and concluded they were taken within 8 kilometers (5 miles) of the pole. Depth soundings taken by Peary and Henson also seem to support their claim.
 
Perhaps the most important support for Peary's claim came from British explorer Tom Avery's polar expedition of 2005. Avery mimicked Peary's supposed route, using sled dog teams. The expedition successfully reached the North Pole. 
Noun

region at Earth's extreme north, encompassed by the Arctic Circle.

claim
Verb

to state as the truth.

dispute
Noun

debate or argument.

Eskimo
Noun

people and culture native to the Arctic region of eastern Russia, the U.S. state of Alaska, Canada, and Greenland.

expedition
Noun

journey with a specific purpose, such as exploration.

explorer
Noun

person who studies unknown areas.

extensive
Adjective

very large.

mimic
Verb

to copy another organism's appearance or behavior.

National Geographic Society
Noun

(1888) organization whose mission is "Inspiring people to care about the planet."

navigate
Verb

to plan and direct the course of a journey.

Noun

fixed point that, along with the South Pole, forms the axis on which the Earth spins.

remarkable
Adjective

unusual and dramatic.

route
Noun

path or way.

skeptic
Noun

person who doubts the truth or authenticity of something.

sounding
Noun

measurement of the depth of a body of water in a specific area.

territory
Noun

land an animal, human, or government protects from intruders.

verify
Verb

to prove as true.