sperm wars
why does anyone get married? because they think they're maximizing their odds for reproductive success.
it's science - here, read this:
[ame=http://www.amazon.com/Sperm-Wars-Science-Robin-Baker/dp/0788160044]Amazon.com: Sperm Wars: The Science of Sex (9780788160042): Robin Baker: Books[/ame]
why does anyone get married? because they think they're maximizing their odds for reproductive success.
it's science - here, read this:
[ame=http://www.amazon.com/Sperm-Wars-Science-Robin-Baker/dp/0788160044]Amazon.com: Sperm Wars: The Science of Sex (9780788160042): Robin Baker: Books[/ame]