坦率地说，从历史上看，除了二战期间以外，澳大利亚几乎总是在帮别人打仗。无论是一战中的加里波利（注：土耳其一地名），还是越南、阿富汗或伊拉克，都是如此。所以我不认为澳大利亚学会了平衡的艺术。

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.

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...