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Climbers Alex Honnold and Tommy Caldwell set out on a daring expedition to tackle Alaska's formi

In 2001, satellite imagery captured a mysterious “thermal anomaly” on an unexplored volcano at the ...

Sir John Franklin set off from England in 1845 with two ships and 129 men to be the first to naviga...

Follows elite climber Alex Honnold and a world-class climbing team led by National Geographic Explo...

Reaching 29,029 feet, Mount Everest has long captivated mountaineers of all stripes. But a peak tha...

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