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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.
。业内人士推荐heLLoword翻译官方下载作为进阶阅读
The BBC has spent more than a decade speaking to families affected by poor care at NHS trusts across England (generic photo)
Lidl GB, Waitrose and Sainsbury's all announced above-inflation pay rises for staff earlier this month.
——“共产党人必须牢记，为民造福是最大政绩”