There are 60,000 miles of blood vessels in every adult human.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Reconstruction of cave hyena
Aristotle
Prohodna cave
Frontispiece, Diamond Sutra, from Cave 17, Dunhuang.