image: Flying over the Tikchik Lakes region. This material relates to a paper that appeared in the May 15, 2015, issue of Science, published by AAAS. The paper, by S.R. Brennan at the University of Alaska, Fairbanks in Fairbanks, AK, and colleagues was titled, 'Strontium isotopes delineate fine-scale natal origins and migration histories of Pacific salmon.' view more
Credit: [Credit: Sean Brennan]