As far back as 40,000 years ago, humans kept track of time using relatively sophisticated knowledge of the stars, new research shows.
from All Top News -- ScienceDaily https://www.sciencedaily.com/releases/2018/11/181127111025.htm
from All Top News -- ScienceDaily https://www.sciencedaily.com/releases/2018/11/181127111025.htm
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