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Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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People about to have surgery must tell their health care providers about all supplements they take.

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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Relationship between winter rainfall and chuckwalla, Sauromalus, size Relationship between winter rainfall and chuckwalla, Sauromalus, size
Size varies greatly among horse breeds, as with this full-sized horse and a miniature horse. Size varies greatly among horse breeds, as with this full-sized horse and a miniature horse.
Chart depicting pupillary size in millimeters Chart depicting pupillary size in millimeters
Population size Population size
Banana Size vs. Calories Banana Size vs. Calories
Bill Size in African Finches Bill Size in African Finches
Video: Contraction and Relaxation Animation

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