TalkStory

They have big hats! According to Geographic, our heads are getting bigger --- and they don't mean that as a figure of speech. New measurements of hundreds of skulls of white Americans born between 1825 and 1985 suggest that their typical noggin height has grown by about a third of an inch (eight millimeters). It may not sound like much, but the growth translates to roughly a tennis ball's worth of new space, which is quite interesting for people with big heads. I can't guess the implications of this jump in cranial size, but other research shows a bigger...