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
Donkeys kill more people annually than plane crashes.
927
If you're one in a million, there are about 7,234 people just like you.
31
The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
240
The average American uses eight times as much fuel energy as an average person anywhere else in the world.
28
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
On average, every dollar bill you touch has over 3,000 different types of bacteria.
8
In the White House, there are 13,092 knives, forks and spoons!
51