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Alarmists: Human Sweating May Not Cool The Body In Global Warming ‘Hellscapes’

by Thomas D. Williams, Ph.D.
August 02, 2018, 3:41 PM
in News and Opinion
Reading Time: 2 mins read
A A
3

beach volleyball hotIf global warming continues, a new report suggests, natural human cooling through sweat may lose its effectiveness as the environment exceeds the temperature of the human body.

An analysis of possible human adaptability to climate change by Tom Vanderbilt published this week in Medium states that savanna areas where evolutionary changes were said to have taken place were hot, “but not necessarily the wet-bulb hellscapes that some climate change models are projecting.”

When speaking of climate change impacts, many “focus on sea-level rise and how coastal dwellers will adapt,” Vanderbilt observes, while in reality “heat may be the bigger story.”

Citing climate scientists Steven Sherwood and Matthew Huber, Vanderbilt says that “if warmings of 10 degrees Celsius were really to occur in next three centuries, the area of land likely rendered uninhabitable by heat stress would dwarf that affected by rising sea level.”

In this regard, heat stress “deserves more attention as a climate change impact,” he says, especially because it will have a direct impact upon the human body.

Once a certain threshold is reached, “we can no longer cool ourselves by convection or evaporation. Our environment becomes, in effect, a steam room; sweating, our great adaptive tool, is no longer effective,” Vanderbilt warns.

Thus, if global warming predictions hold true, he says, the body’s capability for self-cooling in extreme heat may prove insufficient for new environmental scenarios.

The author says that certain studies have indicated that the “critical thermal maximum” for human beings is 35 degrees Celsius (95º F), or around skin temperature.

Beyond this temperature, “any exposure for more than six hours would probably be intolerable even for the fittest of humans, resulting in hyperthermia,” or heatstroke, Vanderbilt says, citing a 2015 article by Jeremy Pal and Elfatih Eltahir in Nature Climate Change.

According to Pal and Eltahir, thanks to climate change “the deadly 35-degree threshold will increasingly be reached by the end of the century, in regions like the Persian Gulf and the densely inhabited regions around the Indus and Ganges river basins.”

And “as temperatures continue to climb and indoor air-conditioning systems are strained, some adaptive responses will begin to kick in,” Vanderbilt predicts, which could include an alteration in human organs, an evolution of human sweat “better suited for aridity,” a permanent shift in metabolism, or even becoming taller and longer-limbed “so as to dissipate heat more reliably.”

Then again, one supposes that if current climate models turned out to be correct, while certain parts of the Earth slowly entered a danger zone of higher temperatures, other parts of the planet would logically mutate from uninhabitable frozen wasteland into territory friendlier to human dwelling and agriculture.

Then again, the average global temperatures in 2018 are on track to be slightly cooler than 2017, and 2017 was cooler than in 2016.

When dealing with climate forecasts for 50 or 100 years in the future, the numbers are only as reliable as the models that generate them.

Read more at Breitbart

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Comments 3

  1. David Lewis says:
    7 years ago

    This is just another junk science study trying to generate support for actions that would cause energy poverty.

    Steve Bunten said it well. The projections have never been right so we don’t have to worry about our bodies not being able to adapt.

    Reply
    • Steve Bunten says:
      7 years ago

      Thanks David. And energy poverty leads to real poverty. Is it racism that drives this since the countries with a need for low-cost energy are African and Asian nations.

      Reply
  2. Steve Bunten says:
    7 years ago

    “When dealing with climate forecasts for 50 or 100 years in the future, the numbers are only as reliable as the models that generate them.”

    And the models have yet to be correct so why even bother looking at them?

    Reply

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