High in the Ecuadorian Andes, at altitudes thousands of meters above sea level, humans face environmental pressures very different from those at lower altitudes.
The human body can acclimatize, physiologically, to the lower levels of oxygen in…

High in the Ecuadorian Andes, at altitudes thousands of meters above sea level, humans face environmental pressures very different from those at lower altitudes.
The human body can acclimatize, physiologically, to the lower levels of oxygen in…