Men have biological clocks too.
Doctors have long known that the older a woman is, the more trouble she will have conceiving. Men can, at least theoretically, father children until they die. But it takes a man five times longer to father a child if he is older than 45.
Benjamin & Sarah's Babyblog is a collection of notes on our children's development and experiences as well as occassional links to information on the Web of personal interest as a parent.