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.
Christopher Columbus is often miscredited for correcting this idea and discovering the Earthâs curves by not sailing off its edge, but in fact, it was Ancient Greeks, such as Aristotle and Pythagoras, around 2,400 â 2,600 years ago, who first proposed that the Earth was round. But youâre not here for a history lesson.