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Scientists reexamining 46 skulls from the tombs of Egypt's first kings found potentially fatal head injuries in 18, suggesting at least 39% may have been deliberately killed. The findings support a century-old theory that royal attendants were sacrificed when kings died. Separately, Smithsonian Magazine reported archaeologists believe a bronze leg found in a Scottish bog may have belonged to a giant equestrian statue of a Roman emperor displayed in Roman Scotland.