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Human shoulders and elbows first evolved as brakes for climbing apes
(www.sciencedaily.com)
just science related topics. please contribute
note: clickbait sources/headlines aren't liked generally. I've posted crap sources and later deleted or edit to improve after complaints. whoops, sry
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I don't screen everything, lrn2scroll
This comment made me chuckle. (An involuntary rhythmic release of air across the vocal chords, generally as a response to stimuli found to be humourous)