“Had you entered any village on Earth in around 3,000 B.C., the first person you would have met would probably be your ancestor,” Hein marveled.

It also means that all of us have ancestors of every color and creed. Every Palestinian suicide bomber has Jews in his past. Every Sunni Muslim in Iraq is descended from at least one Shiite. And every Klansman’s family has African roots.

How can this be? —Matt Crenson —Roots of human family tree are shallow (Yahoo | AP)

Some excellent science writing.