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Author Question: Two children start at one end of a street, the origin, run to the other end, then head back. On the ... (Read 45 times) |
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.
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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 average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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On average, the stomach produces 2 L of hydrochloric acid per day.