One of the many challenges facing Tokyo as it prepares to host the next Summer Olympics is the possibility of a deadly heat wave like the one that has gripped the nation in recent weeks.
With two years to go until the 2020 Games, Japan is experiencing one of its hottest summers on record. On Monday, the mercury hit 40 degrees Celsius in central Tokyo for the first time in history.
If a similar heat wave strikes during the July 24 — Aug. 9 Olympics, the health of athletes, spectators and workers is very likely to be at risk during outdoor endurance events such as the marathon and cycling.