The Difference Between Everest and Chimbaraza

Any mountain climber will tell you there's a very practical difference between climbing Everest and Chimbaraza. Any point above 8,000 meters from sea level or the geoid is something known as the death zone where oxygen levels are simply untenable. This is why airplanes use both gps altimeters and also air pressure altimeters Both of which are tuned using local mean sea level data still because when push comes to shove That is more important than knowing how far you are from the center of the earth or how close to the stars you are.

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