The Headache of Adapting to the Cold (IMAGE) PLOS Caption Frequency of the adaptive allele in several human populations (from the 1000 Genomes dataset). Credit Felix M. Key, MPI-EVA multimedia department and colleagues Usage Restrictions All figures and photographic images will be published under a Creative Commons Attribution License (CCAL), which allows them to be freely used, distributed, and built upon as long as proper attribution is given. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.