Polar bears are creatures of paradox: They are white bears whose skin is black; massive predators who can walk almost silently; Arctic residents whose major problem is not staying warm, but keeping cool. Fully grown they can measure 10 feet and weigh close to 2,000 pounds, but at birth they are just 20 ounces. Creatures that may wander thousands of miles over the course of a year, they begin life in a snowdrift. Human encounters with these legendary...
Related Subjects
Animals Bears Conservation Ecosystems Fauna Mammals Nature Nature & Ecology Science Science & Math