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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

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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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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.

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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

A reindeer sled, Arkhangelsk, Russia. Late nineteenth-century photochrom. A reindeer sled, Arkhangelsk, Russia. Late nineteenth-century photochrom.
The primary response causes B cells to produce memory B cells and a few antibodies. The second ... The primary response causes B cells to produce memory B cells and a few antibodies. The second ...
Ads from the public service campaign in the late 1960s and early 1970s that encouraged people to get ... Ads from the public service campaign in the late 1960s and early 1970s that encouraged people to get ...
Primary causes of chronic liver disease in the United States. Primary causes of chronic liver disease in the United States.
Primary Recovery of Oil Primary Recovery of Oil
Remote satellite monitoring of gross primary productivity across the United States. The differences Remote satellite monitoring of gross primary productivity across the United States. The differences
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

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