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The average office desk has 400 times more bacteria on it than a toilet.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.