I love useless facts
A cat's meow is a sound they only make when communicating with humans.
Money is made from cotton, not paper.
Until 1967, driving was done on the left-hand side on roads in Sweden. The conversion to right-hand was done on a weekend at 5 p.m. All traffic stopped as people switched sides. This time and day were chosen to prevent accidents where drivers would have gotten up in the morning and been too sleepy to realize 'this' was the day of the changeover.
The soviet flag was the first flag to make it to the moon.
And did you know that the minimum number of people you need to have in a room for there to be a better than 50% chance of 2 of them having the same birth day is only 23. I've actually tested this one!