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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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Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

This white pine (Pinus strobus), towering above the canopy in Algonquin Provincial Park, is an examp This white pine (Pinus strobus), towering above the canopy in Algonquin Provincial Park, is an examp
Fallow deer at Avon Valley Country Park, Bristol, England Fallow deer at Avon Valley Country Park, Bristol, England
A maneless male lion, who also has little body hair - from Tsavo East National Park, Kenya A maneless male lion, who also has little body hair - from Tsavo East National Park, Kenya
Specimen in the Doñana National Park Specimen in the Doñana National Park
Biking competition in the park Biking competition in the park
Chimpanzee (Pan troglodytes), Gombe Stream National Park, Tanzania, Africa. Chimpanzee (Pan troglodytes), Gombe Stream National Park, Tanzania, Africa.
Video: Anaphylaxis Animation

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