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Did you know?

Thyroid conditions may make getting pregnant impossible.

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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.

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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.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Rosalind Franklin and X-ray diffraction applied to DNA wet fibres Rosalind Franklin and X-ray diffraction applied to DNA wet fibres
Traction is the application of a pulling force to maintain bone alignment during fracture healing. D Traction is the application of a pulling force to maintain bone alignment during fracture healing. D
Examples of Ways That Different Types of Intersections of Two Line Segments Can Be Transformed into Examples of Ways That Different Types of Intersections of Two Line Segments Can Be Transformed into
The engine is rotated until the timing marks on the front of the crankshaft line up with zero ... The engine is rotated until the timing marks on the front of the crankshaft line up with zero ...
Tai chi stance with front foot pointing straight ahead and back foot at 45° angle, heels in line, ... Tai chi stance with front foot pointing straight ahead and back foot at 45° angle, heels in line, ...
Number line (5 - 1) Number line (5 - 1)
Video: Digestive System Animation

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