Cows can sleep standing up, but they can only dream lying down.
745
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
A cow produces around 200,000 glasses of milk in her lifetime.
373
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31