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200,000 years ago, humans preferred to sleep in beds:
Researchers in South Africa's Border Cave, a well-known archeological site perched on a cliff between eSwatini (Swaziland) and KwaZulu-Natal in South Africa, have found evidence that people have been using grass bedding to create comfortable areas for sleeping and working on at least 200,000 years ago.
These beds, consisting of sheaves of grass of the broad-leafed Panicoideae subfamily were placed near the back of the cave on ash layers. The layers of ash was used to protect the people against crawling insects while sleeping. Today, the bedding layers are visually ephemeral traces of silicified grass, but they can be identified using high magnification and chemical characterisation.
Remains of camphor bush was also found in the bedding, which is used in East Africa to deter insects.
Journal Reference:
Lyn Wadley, Irene Esteban, Paloma de la Peña,, et al. Fire and grass-bedding construction 200 thousand years ago at Border Cave, South Africa [$], Science (DOI: 10.1126/science.abc7239)
(Score: 3, Interesting) by JoeMerchant on Saturday August 15 2020, @01:48PM
We have a "soft" hyperbaric chamber, you can sleep in it and all air comes in from the pump - kind of a "soothing" white noise after you get used to it.
On the other hand, we bought the chamber 10 years ago to use with my then 8 year old son - as he grew, our combined air usage / humidity generation increased to the point that we have to be very still and relaxed in the chamber now or it does get uncomfortable. With the pressure increase there were always environmental comfort challenges, but with the total body mass increase on the inside it is now even worse.
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