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How dung beetles navigate 蜣螂如何导航 Stars in their eyes 眼里有星辰 An insect that steers by the Milky Way 观天识途的昆虫 THE number of animals that navigate by the stars is small. 靠观察星辰行走的动物不多。 Only some birds, a few seals and, of course, humans have the ability. 仅仅有某些鸟类、海豹，当然人也有这个本事。 It had been assumed that other creatures that might do this would need reasonablywell-developed brains. 过去人们设想其他具备这种能力的生物很可能拥有发达的大脑。 That notion has now been proved wrong as thecelestial-navigation club welcomes its latest member: the humble dung beetle. 现在这种见解被推翻了，因为天文导航俱乐部迎来了自己最新的成员不起眼的蜣螂。 Life in the world of dung beetles is fiercely competitive. 蜣螂在这个世界上过着你争我夺的生活。 After rolling up a ball of highly nutritious dung, the beetle must race off with it or riskhaving the ball stolen by other beetles. 蜣螂必须把自己团好的极富营养的粪球搬走，否则劳动成果会被其他的蜣螂偷走。 | 
