Pioneering Frozen Worlds (Hardcover, Library binding)

The Arctic and Antarctic are some of the most severe places to live. Sandra Markle takes the reader to the North and South polar regions to learn about the most recent investigations taking place there. She tells about ways glaciers, icebergs, and sea ice are being researched, and introduces studies of polar bears, penguins, and the shrimplike krill that feed many of the polar inhabitants. Full-color photos.