A transgender woman was able to produce enough milk to breast-feed her partner's newborn baby for six weeks, according to a new report of the case.

When Massachusetts twins Caleb (left) and Emmie (right) Smith were born in 1998, it was hard to tell them apart. Today Emmie says, “When we were 12, I didn’t feel like a boy, but I didn’t know it was possible to be a girl.” At 17 Emmie came out as transgender, and recently she underwent gender-confirmation surgery. She plays down its significance: “I was no less of a woman before it, and I’m no more of one today.”

In a transplant first, a U.S. veteran severely injured by an explosive device in Afghanistan has received a penis and scrotum from a deceased donor.

The more older brothers a boy has, the more likely he is to be gay when he grows up – an effect called the “fraternal birth order effect”. Now it seems that increasing levels of antibodies in a mother’s immune system could play a role.

It's very easy to assume that Judaism is an exclusively gender-binary religion. Almost all of the common traditional laws are based on the assumed differences between males and females. We see it in assumed gender roles, in liturgy, in proscribed family responsibilities, and in both our secular and religious laws.