• 仍无显著证据证明手机危害人体健康

    12-04-26 There is still no evidence mobile phones harm human health, says a major safety review for the UK's Health Protection Agency (HPA). 英国健康保护署一项安全检查称,目前仍没有证据证明手机危害人体健康。 Scientists looked at hundreds of studies of mobile...

  • 社交与合作能提高人类智力

    12-04-20 Scientists have discovered proof that the evolution of intelligence and larger brain sizes can be driven by cooperation and teamwork, shedding new light on the origins of what it means to be human. The study appears online in the journal Proceedings...

  • 人体会向外界释放细菌

    12-03-29 A person's mere presence in a room can add 37 million bacteria to the air every hour -- material largely left behind by previous occupants and stirred up from the floor -- according to new research by Yale University engineers. We live in this micro...

  • 340万年前两种人类祖先曾同时存在

    12-03-29 A team of scientists has announced the discovery of a 3.4 million-year-old partial foot from the Woranso-Mille area of the Afar region of Ethiopia. The fossil foot did not belong to a member of Lucy's species, Australopithecus afarensis, the famous...

  • 人类起源于东非大裂谷

    12-03-27 The huge changes in Earth's crust that influenced human evolution are being redefined, according to research published March 26 in Nature Geoscience. The Great Rift Valley of East Africa -- the birthplace of the human species -- may have taken much...

  • 人为噪音对植物有涟漪效应

    12-03-22 A growing body of research shows that birds and other animals change their behavior in response to humanmade noise, such as the din(喧嚣) of traffic or the hum(嗡嗡声) of machinery. But human clamor doesn't just affect animals. Because many anim...

  • 人脑阿片受体原子结构被确立

    12-03-22 Scientists have for the first time determined the three-dimensional atomic structure of a human opioid(阿片样物质) receptor, a molecule on the surface of brain cells that binds to opioids and is centrally involved in pleasure, pain, addiction, dep...

  • 人与大猩猩基因之比较

    12-03-08 Researchers have just completed the genome sequence for the gorilla -- the last genus of the living great apes to have its genome decoded. While confirming that our closest relative is the chimpanzee(黑猩猩) , the team show that much of the human...

  • 干细胞移植使老鼠的神经功能改善

    12-02-13 In a new study presented at the Society for Maternal-Fetal Medicine's annual meeting, The Pregnancy Meeting , in Dallas, Texas, researchers have reported that early transplantation of human placenta-derived mesenchymal(间叶细胞的) stem cells into...

  • 自然灾害影响人类认知能力

    12-02-13 Not surprisingly, victims of a natural disaster can experience stress and anxiety, but a new study indicates that it might also cause them to make more errors -- some serious- in their daily lives. In their upcoming Human Factors article, Earthquake...