Academic discipline is an area of human knowledge which is associated with a particular aspect of science. There are a wide array of various disciplines. And the number is growing with annually. Cross-disciplinary Academic Disciplines New educational disciplines emerged at the border of old ones. For instance, computer linguistics is an educational discipline which on the one hand relates to linguistic problems, and, on the other hand, studies language which functions at the computer area. One more bright instance is the history of a literature. On the one hand, the discipline researches such phenomenon as literature, but, on the other hand, literature is explored within historic context. There are several academic disciplines which are regarded as pure disciplines, not a mixture of numerous disciplines. But today, when new ways of scientific investigation became more accessible, these disciplines became a real blending of scientific knowledge. Genealogy Genealogy is an academic discipline that explores the data about origin, succession, and kindred of various families and a particular person. The truth is that many centuries ago it was enough to research only written sources. At present, new methods of investigation appeared. Modern genealogists utilize mathematical, statistical, computer, phonetic, biological, and other techniques of scientific study. 1.Mathematics and statistics are needed to count amounts of generations, to find out, for example, a length of a particular generation chain. Due to such investigations it gets clear that today all people can be relatives to one another. 2.Computer databases provide genealogists the opportunity to find relatives in lists of relatives that one can discover in computer records and, furthermore important, in the Internet. 3.Phonetics helps genealogist to discover sound equivalents of surnames, because some people might have travelled, or some modifications in sounds of surnames emerged because of the leaving for another nation. 4.Biology assists scientists to find relatives on the level of DNA.