On this week's episode: do school district boundaries follow the lines suggested by a Voronoi diagram? What are the origins of the Prairie Home Companion song about rhubarb pie? Are some types of blankets warmer than others?
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
Sources: supplementary images for "Voronoi school districts," bit.ly/liuschools1. School district boundaries, bit.ly/liuschools2. Prairie Home Companion, prairiehome.org. A book about Lawrence Tibbett, bit.ly/liulawrence.
