Humans Can’t Survive 107 Degree Temperatures
PNAS published a paper titled “Validating new limits for human thermoregulation.” The scientists placed volunteers into a room and slowly increased the temperature to 107 degrees F. Grist said,” their internal body temperatures began ratcheting upward, as the heat cooked them from the outside in.” It turns out that it does not have to be that hot for humans to become ill and, in some cases, die.
The scientists wrote, “Recent projections suggest that large geographical areas will soon experience heat and humidity exceeding limits for human thermoregulation. The survivability limits modeled in that research were based on laboratory studies suggesting that humans cannot effectively thermoregulate in wet bulb temperatures (Twb) above 26 to 31 °C, values considerably lower than the widely publicized theoretical threshold of 35 °C.”
Survival Temperatures
In English, this means that humans cannot survive for long periods when temperatures are as low as 80 degrees in some cases and, on the outside, 89 degrees. The experiment took into account both heat and humidity.
Depending on the forecast, it will be 89 degrees across much of the world within a few decades and for long periods. In Delhi, it is hotter than that on an average day four months of the year. In Phoenix, the period for the same is closer to three months.
What is not certain is, again, when will a large part of the world will be at temperatures where people cannot survive for a few days or weeks. At that point, where will they go? There is no place to relocate millions of people.
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