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Did you know?

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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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

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There are more bacteria in your mouth than there are people in the world.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Magnetic resonance imaging (MRI). The MRI lab includes the scanning instrument and a computer statio Magnetic resonance imaging (MRI). The MRI lab includes the scanning instrument and a computer statio
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Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ... Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ...
Cranial nerves and their target regions. (Sensory nerves are shown in blue; motor nerves, in red.) Cranial nerves and their target regions. (Sensory nerves are shown in blue; motor nerves, in red.)
The sequence of steps during delivery is shown clearly in these drawings The sequence of steps during delivery is shown clearly in these drawings
Suppose a country imports televisions. The country's supply and demand curves are shown in ... Suppose a country imports televisions. The country's supply and demand curves are shown in ...
Video: Wound Cultures

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