Cryosol | Soil Monoliths Cryosols (or Gelisols in USDA Soil Taxonomy) have permafrost either within 1 m of the surface or within 2 m if the pedon is strongly cryoturbated in the active layer. Monoliths.soilweb.ca
Among the ancient Greeks, Homer thought the world to be flat. In contrast, Pythagoras postulated that the earth was round. A century later, Aristotle sided with the theory of the roundness of the earth.
Members of the Flat Earth Society claim to believe the Earth is flat. Walking around on the planet's surface, it looks andfeels flat, so they deem all evidence to the contrary, such as satellite photos of Earth as a sphere, to be fabrications of a round Earth conspiracy orchestrated by NASA and other government agencies.