Title: How Does a Heat Wave Affect the Human Body? - Scientific American
Headings: How Does a Heat Wave Affect the Human Body?
How Does a Heat Wave Affect the Human Body?
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Recent Articles by Katherine Harmon

Content: What's the hottest temperature a healthy human can tolerate? We don't know that—no one knows that. There are different humans, different humidities, different types of temperature. Have we not evolved to cope with super hot weather? Certainly society has evolved in dealing with the heat—and that has been in the development of air conditioners. The number-one factor that ameliorates death from heat is access to air conditioning. And I've read that fans don't work to prevent overheating in really hot temperatures…
Not only does it not work, it actually makes it worse. We compare it to a convection oven. By blowing hot air on a person, it heats them up rather than cools them down. Are modern humans neglecting to do something our ancestors did to survive the heat?