Your fingernails grow faster in summer.
744
More than 10% of the world's salt is used to de-ice American roads.
54
There are 293 ways to make change for a dollar.
148
Coins usually survive in circulation for about 30 years.
66
The French named one of their aircraft carriers after Ferdinand Foch, a man who once said "Airplanes are interesting toys but of no military value".
10
You can tape a small mirror onto a cone speaker, play music and shine a laser on to the mirror and the reflection will look like a laser light show on your wall.
102
160 cars can drive side by side on the Monumental Axis in Brazil, the world's widest road.
39
If you get water flowing fast enough, it can cut metal.
354