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The average adult has about 21 square feet of skin.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).