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There are more sensory neurons in the tongue than in any other part of the body.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Everyone has one nostril that is larger than the other.
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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.