Contaminants also a threat to polar bears

http://www.eurekalert.org/pub_releases/2015-04/f-sf-caa040715.php

Public Release: 7-Apr-2015
FECYT - Spanish Foundation for Science and Technology

The polar bear (Ursus maritimus), one of the largest carnivorous mammals on Earth, is being made vulnerable by the series of dangers it faces. An international team has established a guide to evaluate the condition of its health and although the polar bear's biggest threat is climate change, plastic pollution and environmental contaminants in its habitat are starting to affect its endocrine system and reproduction.

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