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New research shows that The higher up in latitude you live, the bigger your brain AND eyeballs will be. But does this mean that people who live in these regions are better thinkers? Relatively few innovations have come from people living in these parts of the world, but this may be because the populations of polar  countries have always been relatively sparse.

Their brains may be bigger simply to help them cope with the cold. And what about the eyeballs? There’s less oxygen available at higher altitudes. Many high altitude areas are cold and thus snowy. It turns out that people need to see better in places that receive less light than areas that closer to the equator.
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Forget the "blonde" jokes–it turns out that big-breasted women have higher I.Q.s. Yes, a recent study of over a thousand women revealed that those with larger breasts score about 10 points higher on an I.Q. test than their flatter-chested sisters. In Helium.com, Terrence Aym writes that "Society has also depicted women such as glamour queens and sex-goddesses Marilyn Monroe, Jayne Mansfield and Jane Russell as sexy, but dumb. Yet all who knew them personally attested the three were very smart women."
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Being smart isn’t always successful in the evolutionary race. Swiss researchers wondered why, if intelligence is such an asset, we haven’t evolved to the point where everyone is super smart. Since this hasn’t happened, there must be some good reasons to be dumb. Scottish researchers have discovered that it pays to be smart if you’re poor, but if you’re rich, it doesn’t make any difference.

Debora MacKenzie writes in New Scientist that when Frederic Mery compared smart fruit flies with dumb ones, the unintelligent flies did better. “This shows that just having a better ability to learn involves a cost, even when you aren’t using it,” Mery says.
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Chewing gum could make us smarter, according to a study carried out in the U.K. by the University of Northumbria and the Cognitive Research Unit in Reading. They found that chewing gum has a positive effect on cognitive tasks such as thinking and memory.

?The results were extremely clear and specifically we found that chewing gum targeted memory,? says Andrew Scholey of the university’s Human Cognitive Neuroscience Unit. ?People recalled more words and performed better in tests on working memory.?
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