221- America’s Last Top Model

<p>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 … <a href="http://99percentinvisible.prx.org/2016/07/19/221-americas-last-top-model/" rel="nofollow" target="_blank">Continue reading →</a></p>