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Did you know?
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).
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.