The Delhi heat wave is testing the limits of human endurance: Other hot countries should beware and prepare

Delhi is reeling from the most extreme heat wave India has ever seen. While the record-breaking maximum recorded temperature of 52.9°C has been called into question by India's Meteorological Department, it's entirely possible. The city has been sweltering, with top temperatures ranging from 45.2°C to 49.1°C, at the limit of human endurance.