Barry, John M.The most important thing that people need to understand about the New Orleans area is the interplay between geology and engineering, and their unintended consequences. This involves two issues: how the city became vulnerable and rising sea level. Nature did not make New Orleans vulnerable to hurricanes. Engineers did.TeachingEmergency Management Response & SystemsRisk ManagementEmergency PreparednessNew Orleansgeologyengineeringunintended consequencesrising sea levelhurricanesMississippi Rivercoastal marshArticle