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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.
Vaccines prevent between 2.5 and 4 million deaths every year.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.