Dixon and his scientific team say it's not just the levees that are sinking faster than realized, though.

NPR: Satellite Imagery Shows a Sinking New Orleans

And on this day, we are sorry to report that parts of New Orleans are sinking faster than anyone realized.

NPR: Satellite Imagery Shows a Sinking New Orleans

For example, the nearby community of Kenner, which is built on wetlands that have been drained, is sinking about three-times faster than the rest of the city.

NPR: Satellite Imagery Shows a Sinking New Orleans