the.com/altitude
the invisible ladder where air gets stingy and views get expensive
means The height of something above a fixed reference point, usually sea level or the ground.
from From Latin altitudo, 'height' or 'depth,' built on altus, 'high' (also 'deep' — the same root that gives us 'altar' and 'exalt'). Altus literally means 'grown tall,' from alere, 'to nourish' — so at heart, altitude is just how far something has grown upward.
- death zone
- Above 8,000 meters your body slowly dies regardless
- thin economics
- Half of all air sits below 5.5 km up
- cabin trick
- Jets pressurize to roughly 2,400 meters mid-flight
- boiling point
- Water boils at 71°C atop Everest
- high-altitude flush
- Cheeks redden as blood thickens with extra cells
for instance
mount everest — 29,032 feet above sea level, nepal-china border
dead sea — 1,410 feet below sea level, israel-palestine-jordan