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69vpl TIL that when scientist think they have found a new insect species, they examine its penis; there is such variety between insect penises that it’s a sure fire way of identifying a new species
v1dpB TIL Men initiate sex more than 3x as often as women do in a long-term, heterosexual relationship. However, sex happens far more often when the woman takes the initiative, implying that it’s the woman who sets limits, and that frequency of sex depends on how enthusiastic a couple are about it.