Extreme Heatwaves Breach Human Survival Limits, Study Warns
Recent research has highlighted the increasing threat posed by extreme heatwaves, which are creating conditions that are potentially non-survivable for humans. According to a study published in Nature Communications, scientists re-evaluated six major heatwaves from 2003 to 2024, revealing that these events were deadly, particularly for older individuals. The study found that the combination of high temperatures and humidity reduces the body's ability to cool itself through sweat evaporation, leading to heatstroke. The research indicates that the assumed human survival limit of a six-hour exposure to a wet bulb temperature of 35°C (95°F) is being challenged, as none of the examined heatwaves reached this threshold yet resulted in thousands of deaths. The study underscores the urgent need for mitigating higher temperatures, especially in regions like India and the Middle East, where large populations are at risk. 
