Source: Sky News
British Muslims are being urged to take the lead on fighting climate change as a study suggests rising temperatures will make pilgrimages to Mecca dangerous.
The Hajj, one of the five pillars of Muslim faith, takes place in and around the city situated in a desert valley in western Saudi Arabia.
All Muslims are expected to take part at least once in their lifetime, if their health and finances allow.
The timings of the annual religious event shift each year because it is based on the lunar calendar, and it involves spending around 20 to 30 hours outdoors over a period of around five or six days.
The Saudis want to increase the number of pilgrims to 10 million by 2030.