Watching the devastating and heartbreaking news from the levees breaking in New Orleans, as a result of Hurricane Katrina, is a sober reminder that we also rely on levees to protect us from nature's fury.
As I write this the national mobilization of effort grows to help the people in the hurricane's path, and we wish them well as they struggle with what appears to be one of the largest disasters ever to hit the United States in an urban area.
