To answer your question, I've lived on several continents and everyone seems to use a covering of some sort. So, yep, it's probably universal.
That story about sleeping on embers is interesting. I know the Sothos do sleep on the warmed ground of their firesites hubbled under their blankets, but those fires are dead. Live embers sound dicey.
That story about sleeping on embers is interesting. I know the Sothos do sleep on the warmed ground of their firesites hubbled under their blankets, but those fires are dead. Live embers sound dicey.