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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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The human body produces and destroys 15 million blood cells every second.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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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.
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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.