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
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The largest breed of rabbit is the Flemish Giant.
65
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
Only about 2% of the world population has green eyes.
36