William Leben, Stanford Emeritus Professor of Linguistics, gives a brief explanation of a few Greek and Latin morphology, in the singular and plural, that is still used today. (June 2, 2008)

William Leben, Stanford Emeritus Professor of Linguistics, explains relationships between the development of sounds as Indo-European languages mixed and explains many examples of how roots can create a variety of different words. (May 19, 2008)

William Leben, Stanford Emeritus Professor of Linguistics, discusses academic analyses of the correctness of words and their structural and logical use before he explores folk etymology. (May 12, 2008)