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Natural Sleep and Its Seasonal Variations in Three Pre-Industrial Societies | Dark Hacker News

Natural Sleep and Its Seasonal Variations in Three Pre-Industrial Societies(cell.com)

2 points by jeeshan 10 years ago | 1 comment

dang 10 years ago |

Lots of submissions about this recently, including https://news.ycombinator.com/item?id=10397408 and https://news.ycombinator.com/item?id=10401640.