Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Cows can sleep standing up, but they can only dream lying down.
745
Only about 2% of the world population has green eyes.
36
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94