In this intriguing episode of “Ok. Now You Know,” host Joe Garner transports listeners back to the Civil War era to uncover the origins and evolution of U.S. paper currency, popularly known as greenbacks. With a blend of historical insight and practical reasoning, Joe explores why the government chose green ink for its bills and how this decision has carried through to modern times.

Joe delves into the practicality and psychological reasons behind the green ink choice—durability, resistance to counterfeiting, and the connotation of stability and trustworthiness during tumultuous times. As he traces the journey of greenbacks from the Civil War to the 20th century, Joe highlights the evolving security features like red and blue fibers, color-shifting ink, and watermarks, all while maintaining the iconic green backdrop. The episode paints a comprehensive picture of how tradition and innovation have coalesced to shape the identity of American currency.