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地球生命可能来自火星
2023-12-06Life may have started on Mars before arriving on Earth, a major scientific conference has heard.某学术讨论会上传出消息,生命体到达地球之前已经在火星上出现。New research supports an...
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格陵兰岛未来会出现更多森林
2023-12-06Scientists expect the future climate to become warmer, and that this will apply to the Arctic in particular. Here the temperature is expected to incre...
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用碳粉从水中提取氢气
2023-12-06In the latest advance in efforts to find an inexpensive way to make hydrogen from ordinary water -- one of the keys to the much-discussed "hydrog...
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一万年前亚马逊西部已有人类活动
2023-12-06Previously unknown archeological sites in forest islands reveal human presence in the western Amazon as early as 10,000 years ago, according to resear...
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研究人员试图用光稳定心率
2023-12-06When a beating heart slips into an irregular, life-threatening rhythm, the treatment is well known: deliver a burst of electric current from a pacemak...
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银河系气体云造成遥远类星体形态多变
2023-12-06For the first time, astronomers have seen the image of a distant quasar(类星体) split into multiple images by the effects of a cloud of ionized gas in ou...
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仔鱼依靠气味寻找“回家之路”
2023-12-06How tiny fish larvae travel away from the reef, then know how to navigate their way back home is a scientific mystery. A new study led by Dr. Claire P...
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土卫泰坦星表面覆盖坚硬的风化冰层
2023-12-06An analysis of gravity and topography(地势) data from Saturn's largest moon, Titan, has revealed unexpected features of the moon's outer ice she...
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家禽网状内皮增生病病毒的进化史
2023-12-06A new study by Anna Maria Niewiadomska and Robert Gifford, of The Aaron Diamond AIDS Research Center, New York, reveals that reticuloendotheliosis(网状内...
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干细胞和它的“小伙伴们”
2023-12-06Like volunteers handing out cups of energy drinks to marathon runners, specially engineered "helper cells" transplanted along with stem cell...