<p>For almost 200 years, archaeologists have been puzzled by a mysterious brown stain on the ancient Greek Parthenon temple in Greece. Now, researchers have conducted new scientific analyses, and their verdict is clear: The mystery remains.</p>
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For the first time, researchers have been able to extract DNA fragments from an ancient clay brick, demonstrating how these building blocks from times long past could be used to catalog flora found in the environment at the time.
The National Museum of Denmark is currently home to a clay brick from the palace of the Neo-Assyrian king Ashurnasirpal II, situated in the ancient city of Kalhu. This palace is now recognized as the North-West Palace in Nimrud, located in what is today northern Iraq. Its foundations were laid aroun