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
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
Only about 2% of the world population has green eyes.
36
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13