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Natural Sleep and Its Seasonal Variations in Three Pre-Industrial Societies (cell.com)
2 points by jeeshan 3894 days ago
1 comments
dang 3894 days ago
Lots of submissions about this recently, including https://news.ycombinator.com/item?id=10397408 and https://news.ycombinator.com/item?id=10401640.
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