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

托马斯·S·穆拉尼是斯坦福大学中国历史教授,古根海姆奖学金获得者。他是《中文打字机：一部历史》、《研究始于何处》和《与国家达成共识：现代中国的民族分类》的作者。 返回搜狐，查看更多 ...

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