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Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

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Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

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There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Where mangrove diversity is high, mangrove species show clear patterns of vertical zonation relative Where mangrove diversity is high, mangrove species show clear patterns of vertical zonation relative
James A. Garfield lies mortally wounded. After failing to locate the bullet, surgeons called in Alex James A. Garfield lies mortally wounded. After failing to locate the bullet, surgeons called in Alex
Kara Walker, Insurrection! (Our Tools Were Rudimentary, Yet We Pressed On). Kara Walker, Insurrection! (Our Tools Were Rudimentary, Yet We Pressed On).
Colon with diverticulosis. An inflamed or infected diverticulum is called diverticulitis. Colon with diverticulosis. An inflamed or infected diverticulum is called diverticulitis.
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ... Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...
The prefrontal lobotomy procedure developed by Moniz and Lima. The prefrontal lobotomy procedure developed by Moniz and Lima.
Video: DNA fingerprinting Animation

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