![Altitude sickness may hinder ethnic integration in the world's highest places | Office of the Dean for Research Altitude sickness may hinder ethnic integration in the world's highest places | Office of the Dean for Research](https://research.princeton.edu/sites/g/files/toruqf1771/files/2013_07_02_tibetchina_chart_400-4.jpg)
Altitude sickness may hinder ethnic integration in the world's highest places | Office of the Dean for Research
![A worker loads a container with copper concentrate at the Andina copper mine, 49 miles (80 km) north east of Santiago March 25, 2009. Deep inside the Andes mountains at some 3,800 A worker loads a container with copper concentrate at the Andina copper mine, 49 miles (80 km) north east of Santiago March 25, 2009. Deep inside the Andes mountains at some 3,800](https://c8.alamy.com/compfr/2d17n0h/a-worker-loads-a-container-with-copper-concentrate-at-the-andina-copper-mine-49-miles-80-km-north-east-of-santiago-march-25-2009-deep-inside-the-andes-mountains-at-some-3800-meters-12500-feet-above-sea-level-huge-insect-like-drills-and-front-loaders-are-digging-a-cavern-the-size-of-a-small-football-stadium-the-cavern-will-soon-be-home-to-a-rock-grinding-mill-the-size-of-a-small-apartment-building-and-will-help-turn-chiles-andina-mine-into-one-of-the-worlds-largest-copper-mines-over-the-coming-years-picture-taken-march-25-2009-reuters-ivan-alvarado-chile-business-2d17n0h.jpg)
A worker loads a container with copper concentrate at the Andina copper mine, 49 miles (80 km) north east of Santiago March 25, 2009. Deep inside the Andes mountains at some 3,800
![Here Lies the highest Polo ground! 12,500 feet (38000 meters). Shandur Lake, Pakistan. [OC] [3264x2448] : r/EarthPorn Here Lies the highest Polo ground! 12,500 feet (38000 meters). Shandur Lake, Pakistan. [OC] [3264x2448] : r/EarthPorn](https://i.redd.it/qgorusqu93631.jpg)