Natural Sleep and Its Seasonal Variations in Three Pre-Industrial Societies(cell.com)
cell.com
Natural Sleep and Its Seasonal Variations in Three Pre-Industrial Societies
http://www.cell.com/current-biology/abstract/S0960-9822(15)01157-4
1 comments
Lots of submissions about this recently, including https://news.ycombinator.com/item?id=10397408 and https://news.ycombinator.com/item?id=10401640.