The symbol on the 'pound' key (#) is called an octothorpe.
82
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
Paper money is not made from wood pulp but from cotton. This means that it will not disintegrate as fast if it is put in the laundry.
37
Music is as addictive to the brain as sex and drugs.
27
There is one slot machine in Las Vegas for every eight inhabitants.
58
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
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
Coins usually survive in circulation for about 30 years.
66