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The horizontal fraction bar was introduced by the Arabs.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.