Under the aegis of the University of Oslo, an international research team has extracted and analyzed plant DNA from the sediments of the Armenian "Aghitu-3" cave. About 40,000 to 25,000 years ago, the cave was used as a shelter by humans of the Upper Paleolithic. A detailed analysis of the DNA shows that the cave's inhabitants may have used numerous plant species for a variety of purposes, including for medicine, dye, or yarn. he excavations were led by the National Academy of Sciences of Armenia and the research project "The Role of Culture in Early Expansions of Humans (ROCEEH)," which...