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.

从诺亚·莱尔斯传棒给谢卡莉·理查德森，到高特·高特与托里·刘易斯并肩作战，Olympics.com带您畅想有望在2028年洛杉矶奥运会上争夺金牌的混合接力组合。

After years of anticipation, the greatest show on earth has ended. The London 2012 Olympic Games have come and gone, and the city must begin to return to what life was like before the two weeks of ...