The P.S. at the end of a letter stands for Post Script.
40
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 seahorse is the only fish to have a neck.
12
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
If you put two straws in your mouth, one inside a drink and one outside it, you won't be able to drink through either straw.
202
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89