Cows can sleep standing up, but they can only dream lying down.
745
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
Your thumb is about the same size as your nose.
124
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Lurch, a Watusi bull, had the largest horns in the world.
32
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14