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Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

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The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

The sites of early embryonic development in mammals. The sites of early embryonic development in mammals.
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