illinois, which nowadays is just sort of a small town in illinois, probably best known for actor gary colemanrom there, but a century ago it was rorun by frat earthers -- flat ethers. walk us through the rise and fall of zion. >> guest: sure. so in the early 1900s, zion, illinois, was almost close to a flat earth cult, and that emerged in a very unusual way. that town was originally founded as a very fundamentalist religious town. it was a mainly run by one church who had a very charismatic leader. halleader was quickly deposed -- that leader was quickly deposed by another a arguably even more ruthless are leader who during his time at head of the church became a militant flat earther. and he used that theory to his, to his advantage. he called himself a theocrat, and he absolutely was. he took over the town schools and promoted flat earth theory through them. he would even outlaw references to, to, like, the globe in church hymns. so he h ruled with an iron fist, and part of his very militant belief was flat earth, and he had this town under his thrall for decades. that is what people believ