image: Pristine Vallerbaek valley during fieldwork. This material relates to a paper that appeared in the March 13th, 2019, issue of Science Advances, published by AAAS. The paper, by E. Thomsen at Aarhus University in Aarhus, Denmark, and colleagues was titled, "Agricultural lime disturbs natural strontium isotope variations: Implications for provenance and migration studies." view more
Credit: [Credit: Tine Rasmussen]