Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Only about 2% of the world population has green eyes.
36
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
A cow produces around 200,000 glasses of milk in her lifetime.
373
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82