The obstetrical dilemma hypothesizes walking upright made childbirth difficult for humans but there r other reasons https://www.theatlantic.com/health/archive/2017/12/why-is-giving-birth-so-hard/547340/?utm_source=twb …
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Replying to @ancientchildren @RebeccaSear1 reply 0 retweets 0 likes
I read their study. Not convinced yet.
6:23 AM - 5 Dec 2017
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