The rise of the truly cruel summer
Deadly heat is increasingly the norm, not an exception to it
![Muslim pilgrims take shade from the sun underneath an umbrella during the Hajj pilgrimage in Mecca, Saudi Arabia](https://www.economist.com/cdn-cgi/image/width=1424,quality=80,format=auto/content-assets/images/20240629_IRP001.jpg)
In Japan it starts with the pulsating song of cicadas; in Alaska, with salmon swimming upstream. However it begins, summer in the northern hemisphere—where more than 85% of the world’s population live—soon involves dangerous levels of heat. This year is no exception—indeed, it carries the trend further. In Saudi Arabia more than 1,300 pilgrims died during the hajj, the pilgrimage to Mecca, as temperatures exceeded 50°C. India’s capital, Delhi, endured 40 days above 40°C between May and June. And in Mexico scores of howler monkeys have been falling dead from the trees with heatstroke.
This article appeared in the International section of the print edition under the headline “When the sun beats down”
More from International
![](https://www.economist.com/cdn-cgi/image/width=1424,quality=80,format=auto/media-assets/image/20240810_IRP501.jpg)
Can Donald Trump’s Iron Dome plan keep America safe?
In a dangerous world, cutting-edge missile defence is all the rage
![](https://www.economist.com/cdn-cgi/image/width=1424,quality=80,format=auto/media-assets/image/20240810_IRD001.jpg)
Why the war on childhood obesity is failing
Sugar taxes and obesity drugs will not be enough
![](https://www.economist.com/cdn-cgi/image/width=1424,quality=80,format=auto/media-assets/image/20240727_IRP001.jpg)
Paris could change how cities host the Olympics for good
The games will test the success of new solutions to old bugbears
Could America fight its enemies without breaking the law?
The speed and intensity of prospective conflicts could test the laws of war
How China and Russia could hobble the internet
The undersea cables that connect the world are becoming military targets
Trump and other populists will haunt NATO’s 75th birthday party
Threats to Western alliances lie both within and without the club