The Checkerboard - 99% Invisible

A single diagonal step on a map sparks a legal war with huge consequences. Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early.  Start a free trial now on Apple Podcasts or by visiting <a href="http://siriusxm.com/podcastsplus." target="_blank">siriusxm.com/podcastsplus</a>.  Hosted by Simplecast, an AdsWizz company. See <a href="https://pcm.adswizz.com">pcm.adswizz.com</a> for information about our collection and use of personal data for advertising.