Two decades after Hurricane Katrina devastated New Orleans, flooding 80% of the city and claiming over 1,300 lives, a new study from Tulane University reveals a troubling development: sections of the city’s reinforced levee system are sinking by nearly two inches per year. Researchers, using satellite data from 2002 to 2020, found subsidence not only in wetlands but also in populated neighborhoods and near the airport. Despite nearly $15 billion invested to strengthen flood defenses after Katrin