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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There are 60,000 miles of blood vessels in every adult human.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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The average office desk has 400 times more bacteria on it than a toilet.
Representative fruit types
Invasive species in Canada include (a) zebra mussels, Dreissena polymorpha, (b) sea lamprey, Petromy
Types of muscle tissue.
Labeled diagram and flowchart of the three muscle tissue types.