The WD in WD-40 stands for Water Displacer.
30
The first toilet being flushed in a motion picture was in the movie Psycho.
67
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
The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
At 90 degrees below zero, your breath will freeze in mid-air and fall to the ground.
25
The most common name in the world is Mohammed.
213


