Baked clay tablets from ancient Assyria, dating back as much as 4,000 years, could reveal the locations of 11 'lost cities' in modern-day Turkey. Harvard researchers analysed tablets found in the ancient city of Kanesh, the 12,000 cuneiform trade records include business transactions, accounts, seals and contracts. The researchers used mathematical models based on the price of goods and how frequently goods travelled between trade hubs to track down the locations of the ancient cities. Researchers reconstructed an economic network of trade goods such as wool, wine and precious metals across the Anatolian plateau in the 19th Century BC. The...