Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
The symbol on the 'pound' key (#) is called an octothorpe.
82
Ice isn't slippery. What makes people and things slip on ice is water. A thin layer of ice melts when pressure is applied to it and it is this wet layer on top of the ice that is slippery.
153
Stilts were invented by French shepherds who needed a way to get around in wet marshes.
45
When withdrawing money from an ATM, the 'whirring' sound before your money pops out is actually a recording. The actual mechanism is so far back that you can't hear it.
282
It takes 492 seconds for sunlight to reach the Earth!
44
If you dropped an aerodynamic object (such as a bullet) from the Empire State Building, you could kill someone.
132
The Pittsburgh Steelers were originally called the Pirates.
50