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The FDA recognizes 118 routes of administration.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
The longest a person has survived after a heart transplant is 24 years.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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.