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.

一大早，收到吴鹏程快递来的烘焙牛角面包。蓬松、酥脆、透着淡淡的奶香与麦香，味道真心不错！难以置信，6年前那个眉清目秀的少年，如今竟呈现出如此温暖治愈的生命状态来。原生家庭并没有挡住他追梦的脚步，一路披荆斩棘足以让我们欣慰。

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