Sometimes cures are discovered by accident, as when one medicine not only helps cure the disease it was designed for, but turns out to cure another condition as well. The hair restoring drug Rogaine was one of these–when it was administered to heart patients, they all began to grow (and regrow) hair. Now a cancer drug designed to kill colon cancer cells seems to cause weight loss (in mice, anyway).
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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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