image: This image shows Nevado Coropuna. This material relates to a paper that appeared in the 24 Oct. 2014 issue of Science, published by AAAS. The paper, by K. Rademaker at University of Maine in Orono, ME, and colleagues was titled, "Paleoindian settlement of the high-altitude Peruvian Andes." view more
Credit: [Credit: Kurt Rademaker]