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

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.

土地管理者可以通过几种方式限制可能引发大规模、快速蔓延火灾的燃料，包括清除植被，例如伐木或清理灌木丛，进行规定火烧（即有计划地点燃小规模火灾），或在当地消防员的监督下，让无人区的自然野火自行燃烧。

“春联”或“对联”对立在中国是一种特殊的文学形式。春联是由贴在门口两侧两组对仗的句子组成，在门上面的横批通常是一个吉祥的短语。不论是大富大贵还是贫困潦倒，学富五车还是乡野村夫，每家每户都要在新年时门前贴春联，以寄托对新年的美好祝愿。