Houston is sinking faster than any other city in the U.S., according to a new study from the Columbia Climate School—and the problem may only be getting worse.

A recent study shows most of the biggest cities in the country are sinking, and three Texas cities are doing so faster than the rest.

A new study reveals that all 28 of the most populous U.S. cities are experiencing land subsidence, with many areas sinking at different speeds. This surprising finding doesn’t just apply to coastal cities but includes many urban centers far inland.