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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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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

A controlled fire being set as part of ecosystem management in Jasper National Park. A controlled fire being set as part of ecosystem management in Jasper National Park.
The Periodic Table (Part 1) The Periodic Table (Part 1)
Apical and Lateral Meristems (Part 2) Apical and Lateral Meristems (Part 2)
Memory saver. The part numbers represent components from Radio Shack®. Memory saver. The part numbers represent components from Radio Shack®.
How to convert between imperial and metric units (Part 1) How to convert between imperial and metric units (Part 1)
How to convert between imperial and metric units (Part 3) How to convert between imperial and metric units (Part 3)
Video: Definitions of stroke volume, preload definition & Factors influencing stroke volume

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