Climate change threatens Saudi Arabia's ambitious Hajj plans.

Saudi Arabia's ambitious plans to increase the number of pilgrims for the annual Hajj pilgrimage could face challenges from climate change, as the region is already experiencing scorching temperatures. The expansion of infrastructure and increase in international air travel raises sustainability concerns, despite the country's goal of getting half its energy from renewable resources by 2030. Experts have found that the Hajj contributes to climate change and will be affected by it in the coming decades. Saudi authorities have embraced sustainability as part of Vision 2030, but more measures may be needed to mitigate the impact of climate change on the pilgrimage. Muslim activists have launched grassroots initiatives aimed at a "green Hajj," encouraging pilgrims to adopt sustainable practices.