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Perhaps it’s the biggest question science has left to answer, how did life begin? Now, molecular biologists in Cambridge university have discovered tiny molecules of RNA which they say might provide some clues. Science journalist and author Philip Ball explains what we know and whether we’ll ever find the origins of life on earth.
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这一代的屏幕显示素质拉完了，X 都不买。
大部分爭論圍繞著不同研究者使用的不同調查方法。