The maximum heat and humidity that a human body can withstand may be lower than previously believed, according to a new study from Pennsylvania State University. Researchers have been examining the "wet bulb temperature," or the temperature at which perspiration can no longer drain from the skin without possibly fatal heatstroke. The essential limit may be as low as 30.6 degrees Celsius, according to recent research. Earlier estimates placed this threshold at approximately 35 degrees Celsius (95 degrees Fahrenheit) and 100 percent humidity.
The frequency of harmful wet bulb episodes has already risen over the past 40 years, making this finding particularly alarming in light of climate change. It is anticipated that these occurrences will increase in frequency if global temperatures increase by 2.5 degrees over pre-industrial levels. The oceans have reached their highest recorded temperature, breaking the previous mark set during the 2016 El Nio, according to a recent report from the European Union's Copernicus climate change agency.
Even below the previously predicted threshold, high heat episodes can be fatal, according to experts. Depending on criteria including age, health, and socioeconomic circumstances, each person has a distinct threshold. The elderly and people from lower socioeconomic classes are likely to suffer the most since they are least equipped to defend themselves from excessive heat.
These results have important repercussions. Prioritising actions to reduce climate change and prepare for rising temperatures is essential as the Earth continues to warm. This entails putting policies in place to lessen greenhouse gas emissions, enhancing infrastructure to survive periods of intense heat, and ensuring that vulnerable populations have access to supplies and assistance during heatwaves. The future health and welfare of people could suffer significantly if these problems are not resolved.
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