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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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In 1864, the first barbiturate (barbituric acid) was synthesized.

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According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

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