Urban land use is shifting rapidly, and large plots are being converted to high-rise towers, which increases density, reduces airflow, and traps heat for more people in a smaller area.

When the heat index exceeds 125 degrees Fahrenheit, conditions are classed as “extreme danger,” with a heat stroke highly likely. However, in cities, humidity isn’t the only factor; urban ...

Report studied 24 cities with focus on Chennai, New Delhi, among others. Timely adaptation can avert billions of dollars of ...