Lieberman says the idea “natural” humans sleep eight hours is unfounded; field data from communities without electric light show typical nightly sleep of about six to seven hours, contradicting the cultural prescription of eight hours as a target.
The discovery of a carnyx (above) and a boar's head flag standard in the same hoard has been described as "a discovery of a lifetime" by archaeologists
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‘충주맨’ 김선태, 영상 하나로 이틀만에 100만 구독자