"Patricia E. Clark" wrote:

> Our heads tend to be bigger, but I haven't seen statistics on
> whether our brains are actually bigger.

Ya know, there's a delicate balance between fetal skull dimensions and
maternal pelvic dimensions, to enable the process of birth - the
female pelvis must "evolve" concurrently with the increase in head
size, without compromising the ability of women to walk/run
efficiently.  Isn't that one reason why human infants are born at a
relatively young gestational age?

Just throwing that out...

--
Deanna