The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
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
You forget 90% of your dreams.
256
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 oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Only about 2% of the world population has green eyes.
36
The strangers in your dreams are actually people that you've seen in real life.
50