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在世界即将迎来新的一千年的时候，美国《国家地理杂志》打算在今后1～2年中，通过20个故事对世界作一些点滴的描述。这些故事包括6个具有全球重要性的问题：为什么我们要进行探索；我们的物质世界正在发生什么样的变化；人口增长的压力；为什么生物多样性事关重大；我们的文化
As the world is about to usher in a new millennium, the National Geographic magazine of the United States intends to make some bit of a narration of the world through 20 stories in the next one to two years. These stories include six questions of global importance: why we are going to explore; what changes are taking place in our physical world; the pressures of population growth; why biodiversity matters; our culture