There is enough iron in your body to make a nail 8cm long!

There is enough iron in your body to make a nail 8cm long!

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A healthy (non-colorblind) human eye can distinguish between 500 shades

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People who are blind can see their dreams if they weren’t born blind

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Seeing is such a big part of everyday life that it requires about half

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Out of all the muscles in your body, the muscles that control your eyes

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When you are scared, you produce more earwax!

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Your eyes stay the same size throughout your life as they were when you