In this episode, Dylan, Brent, and Forrest discuss the theory that the earth is expanding. They cover the early 20th century origins of the theory and it's bid to replace the contracting earth theory. After that, they discuss the role Marie Tharp's cartography played in overturning the expanding earth in favor of plate tectonics. Lastly, they discuss the main booster of expanding eartherism today, comic book artist Neal Adams and his disgust over subduction.