除夕晚上,我的狗突然开始一阵阵嚎叫,简直像荒野里的狼。这是它此前从未发出过的声音,惊愕之余,我连忙查询狗为何会嚎叫。AI告诉我,常见原因之一,便是与主人分离后,产生了焦虑,有一种“别丢下我,我害怕”的感情。
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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