Is it not that their heads are shrinking, i always thought that was it, cos they don't need that much space for their brains do they, after all the years women have been doing the thinking for them nature just compensates.
Its not ears its noses too, and women's to grow. Apparently they are the two parts of the body that dont stop growing! Dont know where I heard that from or how right it is, but its seems true. I cant stop looking at old peoples noses and ears now lol.