It's not your imagination. Hurricanes are getting more severe.

In August of 2005, Hurricane Katrina devastated the Gulf Coast, leaving more than 1300 people dead and becoming the most expensive hurricane in history with overall economic losses estimated at $125 billion. 

It was also a harbinger of what would happen to hurricanes in the years to follow, as climate change would make them an increasingly powerful and a regular threat.

NPR Alejandra Borunda explains how the devastation wrought by Hurricane Katrina spurred a better understanding of these intensifying storms and a improved storm preparedness.

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This episode was produced by  Michael Levitt. It was edited by Courtney Dorning, Patrick Jarenwattananon and Sadie Babits. Our executive producer is Sami Yenigun.

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