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Bigger bodies do better in cold climates.

Cold Climates Correlate With Big Bodies For Human Ancestors : NPR

“Human ancestors got steadily larger over the last 1 million years. Our relatives living in colder places developed bigger bodies, a new study finds.”

https://www.npr.org/2021/07/08/1014180079/colder-climates-meant-bigger-bodies-for-ancient-humans

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