![Engines of Our Ingenuity show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/068/560/small/engines-of-our-ingenuity-houston-public-media.png)
Summary: <p>Episode: 1492 Necessity and invention during the 1870 siege of Paris. Today, necessity, invention, and the Siege of Paris. </p>
Summary: <p>Episode: 1492 Necessity and invention during the 1870 siege of Paris. Today, necessity, invention, and the Siege of Paris. </p>