You can actually sharpen the blades on a pencil sharpener by wrapping your pencils in aluminum foil before inserting them.
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Author J K Rowling wrote the final chapter of the last Harry Potter book in "something like 1990", seven years before the release of the first book.
7
The name Joshua is Hebrew for 'Jesus'.
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Your fingernails grow faster in summer.
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You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
In 1976, an underachieving Princeton junior undergraduate wrote a term paper detailing how to make a nuclear bomb. He got an "A", but never got his paper back because it was seized by the FBI.
16
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
Each day, more than $40 Trillion Dollars changes hands worldwide.
37