Teotihuacan's Pyramids Damaged By Ancient Earthquakes

MADRID, SPAIN—A new study of pyramids at the ancient city of Teotihuacan by a team of Spanish geologists has documented damage to the structures caused by five devastating megathrust earthquakes that hit the site between about A.D. 100 and 600, Live Science reports. At its height, the population of Teotihuacan, which is located northeast of Mexico City, reached some 100,000 residents. Megathrust earthquakes occur at subduction zones of tectonic plates, and though they tend to happen more i