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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

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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).

Phidippus johnsoni chelicera (green) and pedipalps (bottom) Phidippus johnsoni chelicera (green) and pedipalps (bottom)
Myopia (nearsightedness). In the uncorrected top figure, the image comes into focus in front of the Myopia (nearsightedness). In the uncorrected top figure, the image comes into focus in front of the
View of the bottom surface of the human brain. View of the bottom surface of the human brain.
Rose window, south transept, Chartres Cathedral. Rose window, south transept, Chartres Cathedral.
Assessing the degree of the burn. Bottom photos show (A) first-degree burn (sunburn) and (B) ... Assessing the degree of the burn. Bottom photos show (A) first-degree burn (sunburn) and (B) ...
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