The summit of Mount Everest is so high the human body can barely function, so most climbers rely on supplemental oxygen to reach the top.
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Everest: Beyond the Limit: Learning to Breathe
The summit of Mount Everest is so high the human body can barely function, so most climbers rely on supplemental oxygen to reach the top.
Added: Oct 28, 2006 Views: 11693 Views Runtime: 02:23
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