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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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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The average office desk has 400 times more bacteria on it than a toilet.
New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670
Lilly Martin Spenser’s painting, Domestic Happiness (1844), reflects the change in attitudes toward
Many households today include young adults who have not moved out of their parents’ homes (or who ...
Income of Adult Children Compared With That of Their Parents
How reciprocal functions compare to the parent function