America’s Last Top Model

In 1943,the Army Corps of Engineers began construction on a scale model that could test flooding in all 1.25 million square miles of the Mississippi River. It would be a three-dimensional map of nearly half of the continental United … Continue reading →

Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and get exclusive access to bonus episodes. 
Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.