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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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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.

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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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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Trapdoor spider (family: Ctenizidae), an ambush predator. Trapdoor spider (family: Ctenizidae), an ambush predator.
It is in the family that we first learn how to do gender, how to match our ideas, attitudes, and ... It is in the family that we first learn how to do gender, how to match our ideas, attitudes, and ...
Funeral Rituals and Practices among U.S. Cultural Groups Funeral Rituals and Practices among U.S. Cultural Groups
Significant hash can be caused by faults in one or more cylinders, whereas amplified hash is not ... Significant hash can be caused by faults in one or more cylinders, whereas amplified hash is not ...
Clinically Significant Drug-Drug Interactions in Dentistry Clinically Significant Drug-Drug Interactions in Dentistry
Clinically Significant Drug-Drug Interactions in Dentistry Clinically Significant Drug-Drug Interactions in Dentistry
Video: PET Scan Animation

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