A Baffled Martian Scrutinizes America These Past 110 Years - 2/10/18

Grand Coulee Dam.  Air-conditioning.   Hoover Dam.  Empire State Building.  Over 3 million miles of highway.  Golden Gate Bridge.  Verrazano Bridge.  Holland Tunnel.  George Washington Bridge.  Automatic transmissions.  Commercial jet travel. Electric refrigerators.  That and more took place 1900-1960.   Since then…?  Almost nothing!  What! Why? Learn more about your ad choices. Visit megaphone.fm/adchoices