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.
The flat Earth theory begins with a sort of logic â the Earth must be flat because it appears to be so. The extension of this belief must be that every image of the curvature of the horizon, every view of Earth from space is doctored in a deep and vast conspiracy.