A new study claims that Mexico City is sinking at an unstoppable rate, with some parts dropping up to 50 centimetres per year over the past few decades.
The massive city was built on a dry lake bed that contains water aquifers which have held up the city in the past, but centuries of pumping water have made them so empty that the surrounding clay sheets are cracking and compressing.
If the rate of sinking continues, it would lead to the contamination of drinking water for the city's 21 million people, says the report published in the journal JGR Solid Earth.
