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Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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The average adult has about 21 square feet of skin.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.