Renan Oztu
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Climbers Alex Honnold and Tommy Caldwell set out on a daring expedition to tackle Alaska's formi
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In 2001, satellite imagery captured a mysterious “thermal anomaly” on an unexplored volcano at the ...
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Sir John Franklin set off from England in 1845 with two ships and 129 men to be the first to naviga...
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Follows elite climber Alex Honnold and a world-class climbing team led by National Geographic Explo...
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Reaching 29,029 feet, Mount Everest has long captivated mountaineers of all stripes. But a peak tha...