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
Author J K Rowling wrote the final chapter of the last Harry Potter book in "something like 1990", seven years before the release of the first book.
7
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
The number of text messages sent and received in a given day is greater than the world's population.
198
There are 293 ways to make change for a dollar.
148
The most collected calls are made on Father's Day.
92
The symbol on the 'pound' key (#) is called an octothorpe.
82