a study examining more than a million people across China and the U.S. showed the effects of growing up in clement weather (i.e., mild fluctuations around an average of seventy degrees). Such individuals are, on the average, more individualistic, extroverted, and open to novel experience. Likely explanation: the world is a safer, easier place to explore growing up when you don’t have to spend significant chunks of each year worrying about dying of hypothermia and/or heatstroke when you go outside, where average income is higher and food stability greater. And the magnitude of the effect isn’t
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