Editing Jared Diamond (section)

=== ''Why is Sex Fun?'' (1997) ===

In his third book, ''[[Why Is Sex Fun?|Why is Sex Fun?]]'', also published in 1997, Diamond discusses evolutionary factors underlying features of [[human sexuality]] that are generally taken for granted but that are highly unusual among our animal relatives. Those features include a long-term pair relationship ([[marriage]]), coexistence of economically cooperating pairs within a shared communal territory, provision of parental care by fathers as well as by mothers, having sex in private rather than in public, [[concealed ovulation]], female sexual receptivity encompassing most of the [[menstrual cycle]] (including days of infertility), [[Menopause|female menopause]], and distinctive secondary sexual characteristics.<ref>{{Cite book |last=Diamond |first=Jared |title=Why Is Sex Fun? |title-link=Why Is Sex Fun? |publisher=Basic Books |year=1997 |isbn=978-0-465-03127-6 |author-link=Jared Diamond}}</ref>