Photograph of the outer city at Tell Brak. Broken pottery and other debris from the outer city are visible in the bottom of irrigation trenches. Today the former area of the outer city is entirely under agricultural fields and sheep pasturelands. This image relates to an article that appeared in the Aug. 31, 2007, issue of the journal Science, published by AAAS. The study, by Dr. Jason Ur and colleagues of Harvard University in Cambridge, Mass., was titled "Early Urban Development in the Near East."