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Going underground 向地底进军 A project to reveal more about all the carbon onEarth 旨在向人们揭示更多地球碳信息的项目 The Deep Carbon Observatory 深碳观测站 A world still full of secrets 一个依然充满秘密的世界 THE carbon cycle is the stuff of school books. 碳循环是学校书本上的东西。 It is a familiar tale of photosynthesis, forests, farming and fossils fuels. 这是个关于光合作用、森林、耕作以及化石燃料的熟识的故事。 Understanding this cycle is important, both because it sustains life on Earth and because it isbound up with the rate of global warming. 理解这种循环很重要，不仅因为碳循环维持地球上的生命，而且因为它对于全球变暖的速度有密切关系。 But are the outlines of the carbon cycle really that familiar? 不过关于碳循环的概要，我们真的那么熟悉吗? At the AAAS meeting in Washington, DC, Robert Hazen of the Carnegie Institution forScience, which is based in the same town, gave a lecture intended to show that this view ofthe carbon cycle only scratches the surface. | 
