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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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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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Cyanide works by making the human body unable to use oxygen.

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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."

Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants. Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
Mammography. (b) A mammogram. A tumor is visible in this mammogram, indicated by the arrow in the lo Mammography. (b) A mammogram. A tumor is visible in this mammogram, indicated by the arrow in the lo
Pierolapithecus catalunicus may be an ancestor of great apes and humans. Its postcranial skeleton sh Pierolapithecus catalunicus may be an ancestor of great apes and humans. Its postcranial skeleton sh
Harriet Beecher Stowe’s novel, Uncle Tom’s Cabin, became a staple of the mid-nineteenth-century thea Harriet Beecher Stowe’s novel, Uncle Tom’s Cabin, became a staple of the mid-nineteenth-century thea
The digital image of a fetus shows a well-developed head and a comparatively smaller body. At 7 ... The digital image of a fetus shows a well-developed head and a comparatively smaller body. At 7 ...
Are reality shows “real”? Does the media tell the “truth”? Are reality shows “real”? Does the media tell the “truth”?
Video: Mechanisms of capillary exchange

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