Deadly wet-bulb temperatures strike the US
1 billion people are at risk of deadly wet-bulb heat in the next 20 years
A swathe of the US south just experienced temperatures that were hot and humid enough to kill a healthy person in the shade, while a large swathe of the north-east US chocked under some of the worst air quality in the world.
At the same time, Texas is suffocating under a record-breaking heat dome.
The worst heat and humidity struck Arkansas, Louisiana, M…