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There are 60,000 miles of blood vessels in every adult human.
The longest a person has survived after a heart transplant is 24 years.
Green tea is able to stop the scent of garlic or onion from causing bad breath.
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.
Blood is approximately twice as thick as water because of the cells and other components found in it.