You notice patterns. White guests often are mortified - that word again - when they learn their ancestors owned slaves. But I've never had a black guest who was upset to learn about white ancestry that probably involved forced sexual relations.

In America one drop of black ancestry makes you black.

But you see, our society is still trapped in this binary, black/white logic and that has had some very positive implications for our generation. It's had some very negative ones as well and one of the negative ones is that it creates enormous identity problems for people who have one black ancestor and all white ancestors for example.

Diversity doesn't mean black and white only.

All of the guests on 'Faces of America' were deeply moved by what we revealed about their ancestry. We were able to trace the ancestry of Native American writer Louise Erdrich back to 438 A.D. We found that Queen Noor is descended from royalty, and that's before she married King Hussein of Jordan.

The thing about black history is that the truth is so much more complex than anything you could make up.