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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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On average, the stomach produces 2 L of hydrochloric acid per day.

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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

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The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce
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Paranasal sinuses are part of the upper respiratory system. From here, infections may spread via the ... Paranasal sinuses are part of the upper respiratory system. From here, infections may spread via the ...
The origin and spread of modern H. sapiens, reconstructed from genetic and fossil evidence. The origin and spread of modern H. sapiens, reconstructed from genetic and fossil evidence.
Video: Coaductile pathway, Timing of contraction signal & Conduction system and ECG

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