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
Diamonds mined in Brazil are harder than those found in Africa.
40
The glue on Israeli stamps is certified kosher.
67
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Water is actually naturally blue.
48
There are 635,013,559,599 possible hands in a game of bridge.
39
There are more than 10 million bricks in the Empire State Building!
75
The ashes of the average cremated person weigh nine pounds.
40