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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“我们持续提升资源利用率，强化污染物减排效果，推动企业实现降本增效，其中仅空气悬浮风机一项就实现了30％能耗节约。”企业安环部负责人周福彪振奋地说。
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