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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

The pH scale and the relative acidities of common substances The pH scale and the relative acidities of common substances
Body plan of a common rotifer, Philodina genus Body plan of a common rotifer, Philodina genus
Lumbar puncture. Abbreviated LP, the lumbar puncture is a common procedure that withdraws cerebrospi Lumbar puncture. Abbreviated LP, the lumbar puncture is a common procedure that withdraws cerebrospi
Large families on U.S. farms used to be common. Children helped plant and harvest crops, take care ... Large families on U.S. farms used to be common. Children helped plant and harvest crops, take care ...
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Common Abbreviations and Symbols Used by Massage Therapists Cont Common Abbreviations and Symbols Used by Massage Therapists Cont
Video: Gastrulation: cross section of the frog

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