Global Times reports that archaeologists investigating the tomb of Liu Hemarquis, the Marquis of Haihun, in east China's Jiangxi Province discovered the world's oldest steel acupuncture needles. Dating to the time of the Western Han Dynasty (206 B.C.–A.D. 9), the 2,000-year-old needles were found within a jade tube, which itself was placed inside a gilded lacquer box. A wooden label lying nearby inscribed with the words "Nine Needles Complete" confirms their identification, as ancient Chinese medical texts recommend the use of nine different needles during acupuncture. Analysis indicated that they were made from steel created through an advanced technique known...