You Go Way Back.

Speaking of "aha!" moments, how’s this for one? According to geneticists, every single person in the world today—that’s almost 8 billion people--share one common ancestor. Known to many as the “Mitochondrial Eve," this mother of everyone on Earth lived between 150,000 and 200,000 years ago, possible in East Africa. Since that time civilizations have risen and fallen. People have moved, willingly or unwillingly. And down the many lines of inheritance and DNA mutations, different races, cultures, beliefs and customs have emerged. So even though you, everyone you know, and everyone you don’t know are distantly related, you and your family have a distinct and personal history.