1 rich Libsyn https://www.libsyn.com 90 600 11: Voronoi school districts, rhubarb pie, blankets On this week's episode: do school district boundaries follow the lines suggested by a Voronoi diagram?&amp;nbsp;What are the origins of the&amp;nbsp;Prairie Home Companion song about rhubarb pie? Are some types of blankets warmer than others? &amp;nbsp; 0:42 - Voronoi school districts 3:09 - Rhubarb pie 7:06 - Shorts 7:40 - Blankets 9:33 - Sources 10:05 - Lev Theremin playing the theremin &amp;nbsp; Sources: supplementary images for &quot;Voronoi school districts,&quot; bit.ly/liuschools1. School district boundaries, bit.ly/liuschools2. Prairie Home Companion, prairiehome.org. A book about Lawrence Tibbett, bit.ly/liulawrence. Look It Up http://lookitup.libsyn.com/podcast <iframe title="Libsyn Player" style="border: none" src="//html5-player.libsyn.com/embed/episode/id/4969891/height/90/theme/custom/thumbnail/yes/direction/forward/render-playlist/no/custom-color/88AA3C/" height="90" width="600" scrolling="no" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe> https://assets.libsyn.com/secure/item/4969891