MENDELEEV SLEEP: The development of the periodic table of the elements was a leap forward in the chemical sciences. Although not responsible for discovering the elements he knew existed, Mendeleev organized the information available to him like no one else before him. It was his organizational skills that revealed something critically important to the advancement of mankind. What he discovered was new! Mendeleev noticed patterns in the properties and atomic weights of halogens, alkali metals and alkaline metals. According to the legend, Mendeleev had written what he knew about existing elements on the equivalent of flash cards and organized, reorganized...