Only about 9% of the global population resides on plateaus. This relatively low percentage is due to the fact that many plateaus, like the Tibetan or Bolivian Altiplano, have harsh climates or thin soils. However, in tropical regions, plateaus are often preferred over humid lowlands because of their cooler, healthier climates. Geographically, plateaus are “economic powerhouses.” While they may not support the massive urban populations seen in river plains, they are essential for the global economy, as they contain the majority of the world’s mineral resources, including iron, coal and precious metals.