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.

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

China's Qinling Station in Antarctica has launched a hybrid power system - combining wind, solar, hydrogen and diesel - marking the country's transition from fossil fuels to sustainable energy in ...