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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.