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
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
154
You forget 90% of your dreams.
256
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Only about 2% of the world population has green eyes.
36
Your body is creating and killing about 2.4 million red blood cells per second.
17