南非時(shí)滯驅(qū)逐津巴布韋移民

科學(xué)60秒:飛行的代價(jià)

More than 60 mammal species—like the famous flying squirrel—have adapted the ability to sail from tree to tree. , yes. But what’s the evolutionary advantage? One theory suggests gliding save...

美文背誦——睡眠的進(jìn)化

Evolution of SleepSleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: it may extend back as far as the reptil...

背誦美文——?jiǎng)游锏牧_盤

Animals’ CompassesResearchers have found that migrating animals use a variety of inner compasses to help them navigate. Some steer by the position of the Sun. Others navigate by the stars. Some ...

青春的自豪

詩(shī)歌The Pride of Youth by Walter Scott Proud Maisie is in the wood, Walking so early; Sweet Robin sits on the bush, Singing so rarely. "tell me ,thou bonny bird, when shall I m...