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Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

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Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

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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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The familiar sounds of your heart are made by the heart's valves as they open and close.

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All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Indicator and umbrella species. Indicator and umbrella species.
Roots of the keystone species hypothesis: does a higher proportion of predators in diverse communiti Roots of the keystone species hypothesis: does a higher proportion of predators in diverse communiti
Protoneuridae is a family of damselflies. Most species are commonly known as threadtails, while othe Protoneuridae is a family of damselflies. Most species are commonly known as threadtails, while othe
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Wave-Cut Platform and Marine Terrace Wave-Cut Platform and Marine Terrace
The first pioneer species arrived less than a decade after the eruption. The first pioneer species arrived less than a decade after the eruption.
Video: Cardiac conductile cells

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