Mexico City, with its 22 million inhabitants, is built on the razed ruins of one of  the most beautiful cities in history, the Aztec capital, Tenochtitlan.  Tenochtitlan was built on an island, in what was then a massive lake, Lake Texcoco; connected to the mainland by impressive causeways.   Hernan Cortes, who destroyed both the Aztecs and their capital, thought the city a marvel of the world. But, being from the Texs of Spain, Extremadura, he never let beauty or a marvel get in the way of his twin purposes in Life, to serve his  God and to get rich. Extremadura as Texas.   The Aztecs were custodians and stewards of water; their heirs, the new Mexican people, not so much. They drained Lake Texcocoand started over building, and over building….until they created a megapolis of 22 million inhabitants, minus water.   “Mexico City, Oe of the world's largest cities, is running out of water, and day zero could happen as soon as June, facing a  dire water crisis  ,,,,,, Some neighborhoo