Summary:Plumbers specialize in the installation and maintenance of water systems. Like electricians, they are required to obtain a license from a trade or vocational school and have a background in various aspects of industrial, domestic, and communal pipe work, water heating (steam- and gas- fitters), water treatment (such as water cleaning and purification), drainage, sewer networking,...

  Summary:How to keep your mind sharp by playing brain engaging puzzles. Keywords:mind games, mind exercise, memory exercise, mathematical puzzles Article Body:Have you ever forgotten where you put your car keys? Have you spent time searching for your sunglasses when they were perched on top of your head? Don't laugh. Even I have done that! Today's culture refers to these scenarios as...