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April 29, 2014 01:28 pm PDT

Is screaming in the middle of the night an anti-sibling babyplot?

Scientists speculate that babies may have evolved to wake up in the middle of the night because overnight breastfeeding delays ovulation and, thus, the creation of a new sibling to compete for resources.







Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/I5WjCiiMF5U/story01.htm

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