http://www.robgagnon.net/Toledo%20University%20President%20Suspends%20Administrator.htm
Contains some summaries of studies I wasn’t aware of and hadn’t heard before.
Especially found this interesting (in about the middle of the article at the end of his study summary): “The study also found that having older brothers increased the likelihood of marrying heterosexually, a result that stands in tension with a Canadian study that found that the incidence of homosexuality increases in proportion to the number of older brothers.”