On thin ice: the changing world of the Polar bear.

New York: Knopf Publishing, 2009.
Octavo, dustwrapper, 406 pp. black and white photographs.

As global warming threatens the ice caps' integrity, the Polar bear has come to symbolize the peril that faces all life on Earth. Here, the acclaimed science writer Ellis offers an impassioned and moving statement on behalf of Polar bears and all they stand for. He gives a vivid and brilliantly articulated picture of earth's largest land predator including their hunting, mating, and hibernation habits.