Summary:
- New Orleans' levee system is designed to protect the city from hurricanes up to a Category 3 storm, but a more powerful Category 4 hurricane could overwhelm the levees and lead to catastrophic flooding.
- Experts warn that a direct hit from a Category 4 hurricane could cause the levees to fail, leading to widespread damage and potentially thousands of casualties in the city.
- Improving the levee system and implementing other resilience measures are crucial to protecting New Orleans from the increasing threat of powerful hurricanes due to climate change.