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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
There are more nerve cells in one human brain than there are stars in the Milky Way.
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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.