《自然》[Nature]13年6月27日出版pdf全文

nero1981

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About the Cover
7 m& g: R. D3 t* W2 J+ KDarwin speculated that bipedalism might have contributed to humans' unique ability to throw things so well. Although some primates, including our closest relatives — chimpanzees, will throw objects now and then, their throws do not come close to matching the speed and accuracy achieved by even young human boys. Neil Roach and colleagues analysed the biomechanics of collegiate baseball players' throwing motion in order to better understand the evolution of this novel behaviour. Their findings show that adaptations in the human upper body allow us to store and release elastic energy in the shoulder in a catapult-like fashion. Evidence of these key shifts in morphology that make this energy storage possible is preserved in the hominin fossil record. From these fossils, the authors infer that the ability to throw objects with high speed probably arose with Homo erectus, and may have had a crucial role in early hunting. Cover: Corbis+ `9 j- A& {: [1 J: ^% Q" A

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aliyun

今天没事来逛逛  

highlight

支持一下吧  

Diary

顶一个先  

123456zsz

文笔流畅，修辞得体，深得魏晋诸朝遗风，更将唐风宋骨发扬得入木三分，能在有生之年看见楼主的这个帖子。实在是我三生之幸啊。  

罗马星空

希望大家都有好运  

ines

好人一个  

foxok

说的真有道理啊！

若天涯

好人一个  

泡泡鱼

感觉好像在哪里看过了，汗~