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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
Did you know?
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.
Did you know?
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Did you know?
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.