Cows can sleep standing up, but they can only dream lying down.
745
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Only about 2% of the world population has green eyes.
36
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212