With their beautiful white fur and powerful presence, polar bears rule the Arctic. These majestic giants swim from iceberg to iceberg in chilling waters, care for their adorable cubs, and are threatened by global warming. Full color. n nWith their beautiful white fur and powerful presence, polar bears rule the Arctic. These majestic giants swim from iceberg to iceberg in chilling waters, care for their adorable cubs, and are threatened by global warming. In this level 1 reader youll learn all you ever wanted to know about polar bears and so much more. Complete with fascinating facts and beautiful images, National Geographic Readers: Polar Bears cant miss.n