Homosexuality Revisited

I came across this link on Ruchira Paul's blog. It's an article from Scientific American that states that the chances of a man being gay is possibly influenced by birth order and number of male biological siblings older than him.

The findings, reported this week in the Proceedings of the National Academy of Sciences, by Anthony Bogaert of Brock University, lend credence to the theory that it's not the social or rearing factors that influence a man's sexual orientation, but rather prenatal mechanisms that begin in the womb.