There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
34
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Your thumb is about the same size as your nose.
124
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
Cows can sleep standing up, but they can only dream lying down.
745
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Mars had an oxygen-rich atmosphere around 4 billion years ago
13