The Arctic Tern's Migration

The difference between night and day is dramatic - so dramatic that most species of animal can thrive either in the day or in the night but not both. They usually sleep during their 'off' period. Humans and most birds sleep by night and work at the business of living during the day. Hedgehogs and jaguars and many other mammals work by night and sleep by day. In the same way, animals have different ways f coping with the change between winter anc summer. Lots of mammals grow a thick, shaggy ...

 We Settle into a Comfortable Identity as Adults

She still felt seasick occasionally, especially when the wind got up and the ship plunged heavily over the crests of the graygreen waves, and then it was Pantalaimon’s job to distract her from it by skimming the waves as a stormy petrel; because she could feel his boundless glee in the dash of wind and water, and forget her nausea. From time to time he even tried being a fish, and once joined a school of dolphins, to their surprise and pleasure. Lyra stood shivering in the fo’c’sle and ...