puberty

This story hit the newspapers here today. I find it disconcerting. Onset of puberty in young girls continues to decline at an alarming rate. The Daily Mail even ran the statistic that 50% of ten year old girls in the UK have hit menarche. As a woman this makes me feel so, well....weird. Does...

This is for a book I'm working on. Just like the title says, generally speaking, at what age do most people's brains stop develping? In other words, at what age do we finally become adults? I've heard that the the age is actually twenty-four (strangely enough, the same age you have to be to...

Ok I heard lots about when it starts and what the signs are but what about the end? What signs are there and what is the general age at which it ends? This is a serious question so to forstall the jokes "40" and "when you die" have already been said.