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Nose1) In one square inch of our hand, we have nine feet of blood vessels, 600 pain sensors, 9000 nerve endings, 36 heat sensors and 75 pressure sensors;

2) Our nose is our personal air-conditioning system: it warms cold air, cools hot air and filters impurities;

3) And speaking of noses . . . this is not exactly a “fun fact,” but a person can expect to breathe in about 45 pounds of dust over his/her lifetime.

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