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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
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The longest a person has survived after a heart transplant is 24 years.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.