Heatwaves around the world are getting hotter and lasting longer according to a new study. Scientists analysed a global dataset of human heat stress and found some subtropical countries are experiencing 50 more days per year of at least strong heat stress compared with the 1970s.

Heatwaves around the world are getting hotter and lasting longer according to a new study. Scientists analysed a global dataset of human heat stress and found some subtropical countries are experiencing 50 more days per year of at least strong heat stress compared with the 1970s.