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.

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

在英国，披头士从利物浦当地一只默默无闻的乐队，经过无数演出的历练，加上日后成为王牌经纪人的Brian Epstein，成功签约EMI唱片公司，与传奇制作人George Martin联手，仅仅推出三张单曲，便以雷霆万钧之势统治了英伦三岛。