image: Close up of the single-grain attachment with green laser used to measure the luminescence stored in individual sand-sized grains of quartz. This material relates to a paper that appeared in the Jan. 6, 2017, issue of Science, published by AAAS. The paper, by M.C. Meyer at University of Innsbruck in Innsbruck, Austria, and colleagues was titled, "Permanent human occupation of the central Tibetan Plateau in the early Holocene." view more
Credit: Robbie Shone