Do you know where the term "Caucasian" comes from? Or that true "Caucasians" are considered to be "Black" in Russia? Did you know that the term "white" was once subdivided into many different races of whiteness? To understand more about America's complex and ever-changing relationship with Whiteness, I sit down with the author of "The History of White People", and esteemed Professor Emerita from Princeton University, Nell Irvin Painter.