Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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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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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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Excessive alcohol use costs the country approximately $235 billion every year.

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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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