The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
Your body is creating and killing about 2.4 million red blood cells per second.
17
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
Only about 2% of the world population has green eyes.
36
Lurch, a Watusi bull, had the largest horns in the world.
32