image: The typical brazier and burnt stones in ancient Pamirs. This material relates to a paper that appeared in the June 12th, 2019, issue of Science Advances, published by AAAS. The paper, by M. Ren at Chinese Academy of Sciences in Beijing, China, and colleagues was titled, 'The origins of cannabis smoking: Chemical residue evidence from the first millennium BC in the Pamirs.' view more
Credit: Xinhua Wu