What does extreme heat do to the human body?

When it comes to heat, the human body is significantly more resilient – it’s the moisture that makes it harder to cool. And humidity, driven by climate change, is rising.

A measure of the combination of heat and humidity is called “wet-bulb temperature”, which is determined by the complete wrap Wet lamp around thermometer bulb. Scientists are using this metric to find out which areas of the world could be most dangerous for humans.

A term that we rarely hear, wet-bulb temperature reflects not only heat, but also how much water is in the air. The higher the number Sweat evaporates and cools the body.

[Wet-bulb temperature is important, climate experts say. So what is it?]

Radley Horton, a professor at Columbia University’s Lamont-Doherty Earth Observatory, says at a certain threshold of heat and humidity, “it is no longer possible to be able to sweat fast enough to resist excess heat.”

Scientists have found that Mexico and Central America, the Persian Gulf, India, Pakistan and Southeast Asia are focusing on this margin before the end of this century.

“Humid heat risks are grossly devalued today and will increase dramatically in the future,” Horton said. “As locations around the world experience previously rare or unprecedented extreme experiences with increasing frequency, we run the risk that our previous messages about extreme heat risks – already sadly inadequate – will fall short of being marked.”

You might think that being near the beach would be a great way to catch the sea breeze and cool it down. But Horton said the extreme conditions are close to the water Things can get worse. As the temperature rises, water evaporates, adding moisture to the air.

“If you were to sit in a town on the shores of the Persian Gulf, the sea breeze could be a deadly wind,” he said.

To better understand why these places are becoming too hot and humid for human endurance, you must first understand how the body cools itself.

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