Blog Post Image: Altitude sickness may hinder ethnic integration in the world’s highest places

The researchers used 2000 Chinese census data to determine the fraction of Han Chinese living in each settlement. Settlements where at least one-third of the population are Han Chinese (orange and red dots) are clustered on the lower edges of the Tibetan Plateau at around 8,900 feet above sea level. (Image by T. Wangyal Shawa)