The colossal squid has the largest eyes in the world.
4
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
If you're one in a million, there are about 7,234 people just like you.
31
The human brain is more active during sleep than during the day.
28
A singing birthday card has more computing power than the allied forces in 1945.
30