The icecap may not be the only thing shrinking in the Arctic. The genitals of polar bears in east Greenland are apparently dwindling in size due to industrial pollutants. Scientists report this shrinkage could, in the worst case scenario, endanger polar bears there and elsewhere by spoiling their love lives and causing their numbers to peter out. In fact, all marine mammals could get affected by these pollutants, "especially the Arctic fox, killer whale and pilot whales," wildlife veterinarian and toxicologist Christian Sonne at the National Environmental Research Institute of Denmark in Roskilde told LiveScience. These animals bodies also carry...