When the levees failed, about 80 percent of New Orleans flooded. More than 1 million people across the Gulf Coast were forced to leave their homes — many never returned.

In the years since, the region has served as a laboratory for researchers from the Georgia Institute of Technology who have traveled to New Orleans and other locations to study the effects of the disaster.

Their work has helped determine what went wrong; how best to rebuild the region; and how to help the nation prepare for future calamities.

Read the full story:
10 Years after Katrina: Lessons Learned, Lessons to Learn