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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
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.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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