Futility Closet

In 1818, Army veteran John Cleves Symmes Jr. declared that the earth was hollow and proposed to lead an expedition to its interior. He promoted the theory in lectures and even won support on Capitol Hill. In this week's episode of the Futility Closet podcast we'll describe Symmes' strange project and its surprising consequences. We'll also revisit age fraud in sports and puzzle over a curious customer. Intro: Grazing cattle align their bodies with magnetic north. The Conrad Cantzen Shoe Fund buys footwear for actors. Sources for our feature on John Cleves Symmes Jr.: David Standish, Hollow Earth: The Long and Curious History of Imagining Strange Lands, Fantastical Creatures, Advanced Civilizations, and Marvelous Machines Below the Earth's Surface, 2007. Peter Fitting, ed., Subterranean Worlds: A Critical Anthology, 2004. Martin Gardner, Fads and Fallacies in the Name of Science, 1986. Paul Collins, Banvard's Folly: Thirteen Tales of Renowned Obscurity, Famous Anonymity, and Rotten Luck, 2015. Americus Symmes