Since we are talking about the weather, here’s a harrowing tale for the future of Mexico City by Michael Kimmelman:
This is the first urban century in human history, the first time more people live in cities than don’t, with predictions that three-quarters of the global population will be urban by 2050. By that time, according to another study, there may be more than 700 million climate refugees on the move.
Not sure which of those tidbits is more shocking.
The problem is not simply that the aquifers are being depleted. Mexico City rests on a mix of clay lake beds and volcanic soil. Areas like downtown sit on clay. Other districts were built on volcanic fields.
The geographic layout of Mexico City also leads to awful smog, which I experience first-hand on a trip there a couple months back. All-around bad urban-planning (in an era before urban-planning, of course). It just seems like there are literal disasters waiting to happen in a few ways – and over 20 million people live there.