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一些端足目动物会在北极繁育
2023-12-06Biologists from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) have for the first time shown that amphipods(端足目) f...
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DNA内部存在天然放射性
2023-12-06Curtin University researchers have shown natural radioactivity within DNA can alter chemical compounds, providing a new pathway for genetic mutation. ...
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银河系有四支旋臂
2023-12-06A 12-year study of massive stars has reaffirmed that our Galaxy has four spiral arms, following years of debate sparked by images taken by NASA's ...
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尼安德特人曾有长期异血缘繁育现象
2023-12-06The most complete sequence to date of the Neanderthal(穴居人的) genome, using DNA extracted from a woman's toe bone that dates back 50,000 years, reve...
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青少年容易模仿妈妈交友中的不良做法
2023-12-06The manner by which a mother interacts with her friends serves as a role model for how an adolescent child develops his/her own peer friendships.妈妈们与朋...
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奥巴马讲话 祝美国人民感恩节快乐
2023-12-06Hi, everybody. On behalf of all the Obamas-Michelle, Malia, Sasha, Bo, and the newest member of our family, Sunny-I want to wish you a happy and healt...
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血吸虫病在非洲的发病率有望降低
2023-12-06The dangerous parasite Schistosoma mansoni that causes snail fever(血吸虫病) in humans could become significantly less common in the future a new internat...
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科学家正尝试利用CO2发电
2023-12-06Researchers are developing a new kind of geothermal(地热的) power plant that will lock away unwanted carbon dioxide (CO2) underground -- and use it as a ...
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安第斯山蛙类数量减少是因为某致命壶菌
2023-12-06A deadly fungus, and not climate change as is widely believed, is the primary culprit behind the rapid decline of frog populations in the Andes mounta...
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研究人员发明更好的人造软骨材料
2023-12-06A Duke research team has developed a better recipe for synthetic replacement cartilage(软骨) in joints. Combining two innovative technologies they each ...