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In seeking to understand factors that affect global biodiversity patterns, scientists have focused much of their research on present-day climate, such as patterns of temperature or rainfall, or recent...
Deprived of oxygen, naked mole-rats can survive by metabolizing fructose just as plants do, researchers report this week in the journal Science. Understanding how the animals do this could lead to tr...
Why lizards have bird breath(图)     bird breath  lizards       2014/12/1
Nov. 17, 2014 – Whether birds are breathing in or out, air flows in a one-directional loop through their lungs. This pattern was unexpected and for decades, biologists assumed it was unique to birds, ...
AUSTIN, Texas — Scientists working on islands in Florida have documented the rapid evolution of a native lizard species — in as little as 15 years — as a result of pressure from an invading lizard spe...
Though present in more than 6,000 living species of fish, the adipose fin, a small appendage that lies between the dorsal fin and tail, has no clear function and is thought to be vestigial. However, a...
The Arctic is home to a growing number of whales and ships, and to populations of sub-Arctic whales that are expanding their territory into newly ice-free Arctic waters.
Where have all the codfish gone?(图)     codfish  cod  fisheries       2014/3/20
The mega-decline in cod and other fisheries across the North Atlantic Ocean threatens the livelihood of fishermen and communities in New England and Atlantic Canada. One suspect in the disappearance ...
Ronan, a California sea lion at Long Marine Laboratory at the University of California, Santa Cruz, is the first non-human mammal convincingly shown to be able to keep the beat.
The design of future space robots may take a cue from the neck joint of an unassuming American field ant.
科学家在最新一期的《自然》杂志中报道称,有两个基因在鱼鳍的发育过程中起关键作用,但它们在动物的四肢中却没有出现,失去这两个基因或许是从鱼鳍进化到动物四肢的“关键步骤”。
据法新社报道,阿联酋4月14日宣布该国科学家本月在迪拜成功克隆出一只骆驼,这是世界首例。阿联酋骆驼繁殖中心研究员Nisar Wani博士称:“这是世界上第一只克隆骆驼。”
哺乳动物脂肪酸合酶是人体细胞中最复杂的分子合成机器之一,同时它也是抗癌药、抗肥胖药及代谢紊乱治疗的有希望的标靶。瑞士科学家近日确定了一个哺乳动物脂肪酸合酶的原子结构。相关论文发表在《科学》(Science)杂志上。 脂肪酸的合成是一个重要的细胞过程,脂肪酸在细胞中被用作能量存储化合物、信使分子及细胞外被膜的构造材料。在除植物外的高等有机体中,脂肪酸的合成由大型多功能蛋白进行催化,在这些蛋白...
哺乳动物脂肪酸合酶是人体细胞中最复杂的分子合成机器之一,同时它也是抗癌药、抗肥胖药及代谢紊乱治疗的有希望的标靶。瑞士科学家近日确定了一个哺乳动物脂肪酸合酶的原子结构。相关论文发表在《科学》(Science)杂志上。 脂肪酸的合成是一个重要的细胞过程,脂肪酸在细胞中被用作能量存储化合物、信使分子及细胞外被膜的构造材料。在除植物外的高等有机体中,脂肪酸的合成由大型多功能蛋白进行催化,在这些蛋白...
新华网巴黎2007年3月29日电 当地媒体日前援引一项最新研究报告说,多数现代哺乳动物的起源可以追溯到恐龙消失很久之后出现的生物大爆发时期。这一研究报告对关于现代地球生命的一个基本理论提出了挑战。

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