A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
The strangers in your dreams are actually people that you've seen in real life.
50
Only about 2% of the world population has green eyes.
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
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
You forget 90% of your dreams.
256