Mount Everest towers more than 29,000 feet above sea level.
High-altitude guiding may be one of the most brutal dream jobs on earth. A longtime pro shares the good—and the bad.
Guinness World Records on MSN
An astronaut's journey from space to the summit of Everest
But on 20 May 2009, former NASA astronaut Scott Parazynski (USA) became the first person to complete both incredible ...
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