In grade school, I was taught that when you flush a toilet in the Northern Hemisphere, the water will swirl counterclockwise down the drain. I was also taught that the water will swirl clockwise in the southern hemisphere. I won't go into great detail, but a great website about the subject can be found here . And we all know it doesn't take 3 hours to flush your toilet, unless of course it gets backed up and you have to call Redi-Rooter. However, since it operates on a longer time scale, there are noticeable effects things that have been around awhile.
Railroad tracks wear out faster on one side than the other.
River beds are dug deeper on one side than the other. Here's a few simple things to help explain the Coriolis force. Click here a here for a simple animation of an object moving away from the North Pole, showing how it curves to the right when viewed by the person on earth. This curvature comes about from the Coriolis force. Everything I have just described is, in a nutshell, the Coriolis force.