​​ A slow-motion crisis is playing out for the 9.2 million peo | Tech Updates and News

​​ A slow-motion crisis is playing out for the 9.2 million people who live in Mexico City. Due to a phenomenon called subsidence, parts of the city are now dropping a foot and a half each year. In the next century and a half, researchers calculate areas could drop by as much as 65 feet—with the potential for spots just outside Mexico City to sink 100 feet.