How many polar bears are in the world? What are common misconceptions of the polar bear? Joining us to discuss this and other questions is  Dr. Todd Atwood , Researching Wildlife Biologist at the Alaska Science Center Who Has Spent The Last Minute On This Hypercarnivorous Mammal From The North. This is the first part of a two-episode exploration of two polar bears-the one that travels along the ice and the one that circulates in the media.