Riyadh, Saudi Arabia Mohamed Hussain Younis / EyeEm / Getty Images
Extreme heat has been a far greater challenge for urban populations around the world than rural ones over the past 40 years.
Cities are vulnerable to heat because of both climate change and something called the – a phenomenon where urban areas are much hotter than surrounding rural regions due to their higher concentration of built infrastructure and human activities.
at the University of California, Santa Barbara, and his colleagues used worldwide urban population data combined with global fine-resolution maximum air temperature and…
