“The Mississippi River will always have its own way; no engineering skill can persuade it to do otherwise,” said Mark Twain. In this, our final episode marking the 20th anniversary of Hurricane Katrina, we consider how efforts to control the Mighty Mississippi – a river engineered from its Minnesota headwaters to its Gulf Coast outlet – have responded to the devastating storm, and how New Orleans’ relationship to the river has changed. Can the city keep up with the pressure that climate change is putting on this engineered system, or is retreat the only viable response?

Plus, a wetland recovery project that aims to bolster protection from hurricanes and flooding in the Lower Ninth Ward.

Guests:

Boyce UpholtJournalist and author of “The Great River: The Making and Unmaking of the Mississippi River” 

Nathaniel RichAuthor of “Second Nature: Scenes From a World Remade” and the New York Times Op-Ed, “New Orleans’ Striking Advantage in the Age of Climate Change” 

Harriet Swift – New Orleans resident

Andrew HorowitzHistorian, University of Connecticut, author of “Katrina: A History, 1915-2015

Rashida FerdinandFounder and Executive Director of Sankofa Community Development Corporation, overseeing the Sankofa Wetland Park and Nature Trail in New Orleans

Jason Day – Biologist, wetland Scientist, Comite Resources in Louisiana

Descripción en español

originally aired August 18, 2025

Featuring music by Dewey Dellay and Jun Miyake

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2026 Webby Award Nominee
for our three part series on the 20th anniversary of Hurricane Katrina

Big Picture Science is an immersive radio show and podcast that reveals the unexpected connections in science.

Our Skeptic Check episodes take a critical look at extraordinary science claims and pseudoscience.

Don’t settle for a science snapshot. Get the big picture. 

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Molly Bentley Executive Producer and Co-Host, Big Picture Science  

Seth Shostak Producer and Co-Host, Big Picture Science
Senior Astronomer, SETI Institute

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