The word "impossible" dropped in use by 50% over the course of the 20th century
5
You can alleviate a tickly throat by scratching your ear.
9
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Real diamonds do not show up on x-ray.
36
In Georgia, there is an airtight room called the Crypt of Civilization that was sealed in 1940. It contains numerous artefacts documenting what life was like at the time of sealing, and is scheduled to be opened in the year 8113 to show people of the future exactly what life was like.
13
The first female self-made millionaire in America was a black woman.
5