Let’s pray for the 550 people who died last week during the Hajj pilgrimage (a Muslim religious journey) to the holy city of Mecca due to the scorching heat. Temperatures reached at least 51.8°C in the city. The pilgrims used umbrellas to protect themselves from the sun, while authorities warned people to stay hydrated and avoid the hottest hours from 11 a.m. to 3 p.m.