[Verginius Rufus]

If the human race began in Africa, then it would be likely that the human diversity there would be greater than elsewhere--some lineages migrated to other continents, but not all.

One of my high school classmates proved that the human race started in Africa, thusly: The Bible says Adam named all the animals, so he must have named the lion. Lions are found in Africa. Therefore, the Garden of Eden was in Africa.

It's hard to argue against that kind of logic.

[cerberus]

Adam named all of the animals. Polar bears are found in the Arctic Circle. Therefore, the Garden of Eden was in the Arctic Circle.