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

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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

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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.

To travel quickly, killer whales leap out of the water when swimming—a behaviour kn To travel quickly, killer whales leap out of the water when swimming—a behaviour kn
An incentive spirometer An incentive spirometer
Incentive spirometry. A portable incentive spirometer is useful for encouraging patients to exercise Incentive spirometry. A portable incentive spirometer is useful for encouraging patients to exercise
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it. In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
Food Assistance Programs in the United States Food Assistance Programs in the United States
Video: Language Areas Animation

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