In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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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).
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Guttation, the result of root pressure.
Calvin Cycle
Acetoacetic acid
The Cori cycle
Bone Healing. The Bone Repair Cycle. Presentation of a Forearm Fracture
