What is it about this small sliver of our earth, a place the ancients called Nahrain? To the eye it appears little more than some modest mountains, portent desert, and antediluvian rivers carved through limestone over eons. But why here was it man's reasoning first turned the corner to become knowledge? What was it that its conquerors coveted down through history, and keeps more conquerors coming back even unto today? And why here did the God of Abraham...