How did groups of modern humans inhabiting high-altitude environments adapt to live in such low oxygen levels? Some, such as the Andeans, cope with these conditions by increasing their capacity for oxygen. Tibetans have adapted by doing the opposite but have evolved ways to use the scarce oxygen more efficiently. They have a unique version of a gene called EPAS1 that is thought to reduce … Continue reading Tibetans adapted to high altitudes thanks to an extinct group of humans