Did you read the article? It's pretty straightforward: once humidity gets high enough, sweat stops working to cool the body. If humidity is that high, and the

Did you read the article? It's pretty straightforward: once humidity gets high enough, sweat stops working to cool the body. If humidity is that high, and the temperature is high enough, then every body will begin to overheat, with no non-technical ability to stop the process. It's been hot and humid in a lot of places for a long time, but it's only just now beginning to be hot and humid enough to be passively deadly.