The pilgrimage to Mecca has been a tradition done since the start of Islam. As the 5th pillar of Islam, Hajj holds great importance to all Muslims as a necessary part of their lives. With temperatures increasing drastically due to climate change, it is said that incidents and dangers of this environmental change will largely affect the pilgrimage. Since it takes place during the warmest time of the year, worshippers will be introduced to health risks in future years. Officials of Saudi Arabia are preparing certain protective measures, such as misters outdoors, but researchers state that in coming years the number of participants of the pilgrimage will have to be limited.

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