Let’s relax and sleep with more from one of the weirder scientific theories ever conceived, that the Earth is hollow and filled with other inhabited words. Newton is mentioned, so you know it’s science. Want to support us and help us stay ad-free? Neat! Patreon: www.patreon.com/boringbookspod Buy Me A Coffee: www.buymeacoffee.com/d5kcMsW Read "Symmes Theory of Concentric Spheres” at Project Gutenberg: http://www.gutenberg.org/ebooks/54329 Music: "Boring Books for Bedtime" by Lee Rosevere, licensed under CC BY (leerosevere.bandcamp.com) If you'd like to suggest a copyright-free reading for soft-spoken relaxation to help you overcome insomnia, anxiety and other sleep issues, connect on our website, boringbookspod.com.