Saba Douglas Hamilton joins arctic expert Jason Roberts in the remote Svalbard Archipelago to find out.北极居民之一的北极熊的身体构造有赖严寒天气才能正常地生活，温室效应对牠们造成什麽影响？
Serum Protein Polymorphism of Saba Pig and Its Relationship to Productive Performances撒坝猪血清蛋白多态性及一些生产性状的关系