The versatile floor covering works just as well in a high-traffic indoor area as it does under patio furniture. It is stain-resistant, fade-resistant and weather-resistant. Made of machine-woven ...

Place the marble at rest. Why does the marble stay still? Tilt the box and observe. What causes the marble to move? What causes the marble to stop or slow down? Place one marble in the maze.

The truth, however, is more complex, and often causes confusion among homeowners who aren't sure how to clean marble floors.