New research suggests that natural selection is occurring in remote villages in Nepal, where ethnic Tibetan women are physiologically better adapted to living at high altitudes. The study found that these women bear more children and have physiological traits that help them survive in low-oxygen environments. This hints at an evolutionary pressure to pass on beneficial traits to the next generation.

Source: https://www.livescience.com/health/genetics/natural-selection-is-unfolding-right-now-in-these-remote-villages-in-nepal