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The order in which colors are named worldwide appears to be due to how eyes work. Researchers have found that colors familiar to one culture might not even have names in another, suggesting that different cultures indeed have different ways of seeing–and understanding–the world.

Color names always seem to appear in a specific order of importance across cultures: black, white, red, green, yellow and blue. In LiveScience, Charles Choi quotes physicist Francesca Tria as saying, "If a population has a name for red, it also has a name for black and for white–or, if it has a name for green, it also has a name for red." But if a population has a name for black and white, that doesn’t necessarily mean they have a name for red.
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Of all the millions of animals on Earth, only humans get Alzheimer’s disease, which is caused by the formation of metallic "plaques" in the brain, particularly iron ones.

This may be because this dreaded disease somehow facilitated human evolution. But scientists have discovered a new way to stave it off: EXERCISE.

In PhysOrg.com, Alvin Powell quotes neurologist Bruce Yankner as saying, "Something has occurred in evolution that makes our brain susceptible to age-related change." Was that "something" the same thing that makes humans so SMART?
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