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.
很久以前,一位皇帝决定修建一座长城来保护他的新帝国,并确保自己的权力。他下令全中国的男子离开家乡,投入到修建长城这一艰苦卓绝的劳作中。岁月流逝,长城日益绵延,但很少有人能再返回家园。然而,一名工人的死亡却给长城带来了麻烦。张居文(Juwen ...
《国际事务》(International Affairs)是国际关系领域的一流学术期刊,也是多学科综合性学术期刊。本刊于1992年由伦敦皇家国际事务研究所查塔姆学院(Chatham ...