We're all related

Now that The Atlantic Monthly has made their archives freely available, I'd like to pass along a link to one of my favorite genealogy-related articles from the magazine, The Royal We, which develops the assertion that:

The mathematical study of genealogy indicates that everyone in the world is descended from Nefertiti and Confucius, and everyone of European ancestry is descended from Muhammad and Charlemagne

Update: A new article on this topic is at:
So you’re related to Charlemagne? You and every other living European…