Mexico City is sinking by nearly 25 centimetres (10 inches) annually, new satellite imagery from NASA has revealed, positioning it among the world's most rapidly subsiding major cities.
This sprawling urban centre, home to approximately 22 million people across 7,800 square kilometres (3,000 square miles), was originally constructed on an ancient lake bed. This historical foundation is evident in many downtown streets that once served as canals, a feature still present in its rural outskirts.
