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Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

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Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

The Sun in false-color ultraviolet image The Sun in false-color ultraviolet image
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Color Vision Color Vision
Swedish Massage Techniques and Variations Cont. Swedish Massage Techniques and Variations Cont.
Dried fruits often have sulfur dioxide or other sulfites added to them to preserve color and flavor Dried fruits often have sulfur dioxide or other sulfites added to them to preserve color and flavor
A human pedigree of the X-linked color-blindness trait A human pedigree of the X-linked color-blindness trait
Video: Deglutition

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