Guardian: Eyebrows would be raised if American crocodiles, found on the southern tip of Florida, decided to relocate to New York's Fifth Avenue or Moroccan camels suddenly joined the tourist throng outside Buckingham Palace in London. Yet this is the scale of species shift that appears to be under way in Alaska.
In July, researchers in Cape Krusenstern national monument on the north-west coast of Alaska were startled to discover a nest containing Caspian terns on the gravely beach of a lagoon. The birds...