image: University of Wyoming researchers Hank Harlow, left, and John Whiteman collect a breath sample from a polar bear on pack ice in October 2009. This material relates to a paper that appeared in the July 17, 2015, issue of Science, published by AAAS. The paper, by John Whiteman at the University of Wyoming in Laramie, Wyo., and colleagues was titled, "Summer declines in activity and body temperature offer polar bears limited energy savings." view more
Credit: [Credit: Daniel Cox]