Scientific American: Polar bears and penguins get all the attention but there’s more than large, fuzzy and feathered animals thriving at the frozen antipodes of our planet. Both of Earth’s polar environments host rich webs of plants and animals–and all of these inhabitants face a changing clime. A warming global climate may favor species that don’t intimately depend on ice that floats on the sea to hunt or are more versatile in what they can eat as well as those able to thrive in higher temperatures. …