Cows can sleep standing up, but they can only dream lying down.
745
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
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
You forget 90% of your dreams.
256
Your thumb is about the same size as your nose.
124