Eyes are made up of over 2 million working parts.

Eyes are made up of over 2 million working parts

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It takes more muscles to frown than it does to smile – around 43 grumpy

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The human eye can see 500 shades of grey

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Your iris (the colored part of your eye) has 256 unique characteristics;

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80% of our memories are determined by what we see

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On average, your gut contains around 100 trillion microbes which help

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Both sperm and egg only contain half the DNA required to create a human