Millions of Muslims gathered for the Hajj pilgrimage in Mecca are at risk of heat exhaustion and heat stroke due to human-induced climate change.

MECCA, May 29 — Climate change is gradually shrinking the times of year when the annual Muslim Haj pilgrimage can take place in safe weather conditions, according to a new study...

Climate change is gradually narrowing the window in which the annual hajj Muslim pilgrimage can take place safely, according to new research by the World Weather Attribution group…