humans-凯发k8官网

  • 老鼠的扩散历程

    12-03-20 house mice (mus musculus) happily live wherever there are humans. when populations of humans migrate the mice often travel with them. new research published in biomed central's open access journal bmc evolutionary biology has used evolutionary techn...

  • 昆虫同样也有“性格”

    12-03-09 a new study in science suggests that thrill-seeking is not limited to humans and other vertebrates(脊椎动物) . some honey bees, too, are more likely than others to seek adventure. the brains of these novelty-seeking bees exhibit distinct patterns...

  • 全球变暖可能会使人类变矮

    12-03-05 global warming could make humans shorter, warn scientists who claim to have found evidence that it caused the world's first horses to shrunk nearly 50 million years ago. 科学家警告说,全球变暖可能会使人类变矮。科学家宣称已经找到证据:近5000万年前全...

  • 家畜身上某致命耐性菌能感染人类

    12-02-22 a strain of the potentially deadly antibiotic-resistant bacterium known as mrsa has jumped from livestock to humans, according to a new study involving two northern arizona university researchers. paul keim, regents' professor and director of nau's...

  • 大象的消失促进了现代人的出现

    11-12-13 elephants have long been known to be part of the homo erectus(直立人) diet. but the significance of this specific food source, in relation to both the survival of homo erectus and the evolution of modern humans, has never been understood -- until...

  • 狗类起源于东亚地区

    11-11-24 researchers at sweden's kth royal institute of technology say they have found further proof that the wolf ancestors of today's domesticated dogs can be traced to southern east asia -- findings that run counter to theories placing the cradle(摇篮,...

  • 英国出土欧洲最古老的现代人颚骨

    11-11-06 a piece of jawbone excavated from a prehistoric(史前的) cave in england is the earliest evidence for modern humans in europe, according to an international team of scientists. the bone first was believed to be about 35,000 years old, but the new r...

  • “垃圾dna”界定人与猩猩差异

    11-10-26 for years, scientists believed the vast phenotypic(表型的) differences between humans and chimpanzees would be easily explained -- the two species must have significantly different genetic makeups. however, when their genomes were later sequenced,...

  • 人类与猩猩有相同的文化演化根源

    11-10-21 culture is not a trait that is unique to humans. by studying orangutan(猩猩) populations, a team of researchers headed by anthropologist(人类学家) michael krtzen from the university of zurich has demonstrated that great apes also have the abilit...

  • 海洋生物体发光之潜在机制

    11-10-20 it has long been known that distinctive blue flashes--a type of bioluminescence--that are visible at night in some marine environments are caused by tiny, unicellular(单细胞的) plankton known as dinoflagellates(鞭毛藻类) . however, a new study h...

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