Each day, the animal kingdom produces roughly enough poop to match the volume of water pouring over Victoria Falls. So why isn’t the planet covered in the stuff? You can thank the humble dung beetle for eating up the excess. Eleanor Slade and Paul Manning explain how these valiant insects make quick work of an endless stream of faeces.

每天，动物王国产生的粪便大约足以抵得上维多利亚瀑布的水量。那么，为什么地球上没有被这些东西覆盖？你可以感谢卑微的蜣螂，因为它吃掉了多余的粪便。埃莉诺-斯莱德和保罗-曼宁解释了这些勇敢的昆虫是如何快速处理无尽的粪便的。