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by cubefox 1121 days ago
They were a lot longer outside than modern people though.
1 comments
antisthenes 1121 days ago
Outside != full sun.

Sitting in tree shade won't give you skin cancer.

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insanitybit 1120 days ago
How much UVA/UVB gets filtered out from shade under a tree? And how much vitamin D are we getting to make sitting in the shade worthwhile?
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