HUMANS ARE EVOLVING RIGHT BEFORE OUR EYES ON THE TIBETAN PLATEAU

Summary from the TLDR newsletter

Humans living in the high altitudes of the Tibetan Plateau, where oxygen levels in the air are notably lower than where humans usually live, have changed in ways that allow them to make the most of their atmosphere. Their adaptations maximize oxygen delivery to cells and tissues without thickening the blood. These traits developed due to ongoing natural selection. Learning about populations like these helps scientists better grasp the processes of human evolution.