1 . Qatar’s Mutaz Essa Barshim and Italy’s Gianmarco Tamberi were competing in the high jump on Sunday when they reached a stalemate (僵局). Both men had managed to jump over a surprising 2.37 meters with no faults along the way. However, after three attempts neither managed the next level of 2.39 meters.

An Olympic official suggested a jump-off between the two friends and rivals (竞争对手) to determine who would get the gold medal. But Barshim had another plan to reward their efforts.

2 . For the biggest stadiums in the world, we have used data supplied by the World Atlas list so far, which ranks them by their stated permanent capacity, aswell as updated information from official stadium websites.

All these stadiums are still functional , still open and still hosting the biggest events in world sport.

3 . Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact(接触) with the ground at all times. It’s this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.