Dr. Lefkowitz describing and attempting to defend her scholarship background in this area.

Dr. Bernal describing his background and scholarship in this area and answering follow up questions from the moderator.
Says he is not Afrocentric except to the extent that Africans and people of African descent have played significant roles in wold history and this information has been systematically denied by European and north american scholars in the 19th and 20th century.

Dr. John Henrik Clark describing what led him in the direction of his background in this field.