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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

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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.

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Your heart beats over 36 million times a year.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Richard Wrangham’s “female-bonded” theory of intergroup competition was highly influential in our un Richard Wrangham’s “female-bonded” theory of intergroup competition was highly influential in our un
Five Factors of Personality and the Traits they Include Five Factors of Personality and the Traits they Include
Factors Affecting Saturation and Condensation: Effect of Solution Factors Affecting Saturation and Condensation: Effect of Solution
Factors Affecting the Environmental Lapse Rate (ELR): Heating or Cooling of the Lower Atmosphere Factors Affecting the Environmental Lapse Rate (ELR): Heating or Cooling of the Lower Atmosphere
Major three factors of blood pressure. Major three factors of blood pressure.
The Wind Chill Index. The Wind Chill Index.
Video: Action potentials - electrical characteristics and generation

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