The Delhi heat wave is testing the limits of human endurance: Other hot countries should beware and prepare Phys.orgDelhi’s record 52.9C temperature reading was wrong by three degrees, India says Reuters IndiaIndian capital of Delhi breaks all-time heat record, as authorities impose water rationing CNNSensor error means New Delhi heatwave record overstated by 3C The GuardianDelhi suffers record heatwave as temperatures soar near 50C Financial Times