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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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Green tea is able to stop the scent of garlic or onion from causing bad breath.

Past and current ranges of the grizzly bear. Past and current ranges of the grizzly bear.
Direction of Movement of Extraocular Muscles Direction of Movement of Extraocular Muscles
Current Positions of Known Dwarf Planets and SSSBs in the Outer Solar System Current Positions of Known Dwarf Planets and SSSBs in the Outer Solar System
To reverse the direction of operation, the polarity of the current through the motor is reversed. To reverse the direction of operation, the polarity of the current through the motor is reversed.
A current model for protein secretion by prokaryotes A current model for protein secretion by prokaryotes
North Atlantic Current North Atlantic Current
Video: Inflammation and Fever

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