人们常说情人眼里出西施，但有一件事是肯定的：并非所有的动物都是可爱又惹人喜爱的。有些动物的外表非常奇怪。下面我们重点介绍十种外表最奇怪的动物！ An 澳大利亚动物，鸭嘴兽属于单孔目（卵生哺乳动物）。欧洲博物学家和科学家曾经在读到鸭嘴兽 ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...