Heatwaves around the world are getting hotter and lasting longer according to a new study. Scientists analysed a global dataset of human heat stress using a measurement called the Universal Thermal Climate Index and found some subtropical countries are experiencing 50 more days per year of at least strong heat stress compared with the 1970s.
Searing daytime temperatures of 45 Celsius (113 Fahrenheit) are ensuring many people here in the Iraqi capital Baghdad wait until night time before they venture outdoors.
They are not alone.
According to a new study published in the journal Nature Climate Change extreme 'feels-like' temperatures, heat stress days and tropical nights have all become dramatically more frequent.
The study was carried out by researchers from the European Centre for Medium-Range Weather Forecasts.
