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Not so hot: US data suggest human bodies are cooling down

Normal body temperatures are a fraction of a degree colder than they were in the nineteenth century.
  1. Ewen Callaway
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The human body is getting colder. Since the nineteenth century, normal body temperatures have dropped by a fraction of a degree, according to a provocative study of more than 677,000 thermometer measurements taken from people in the United States since 18601.

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Nature 577, 306 (2020)

doi: https://doi.org/10.1038/d41586-020-00074-9

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