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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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Green tea is able to stop the scent of garlic or onion from causing bad breath.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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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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