Whipping his racquet through the air like a cesta in jai alai, Rafael Nadal produces such tremendous topspin that the ball sometimes seems to catapult off the court, creating a shot as challenging to ...

Forbes contributors publish independent expert analyses and insights. Tim Newcomb covers tennis gear/business, stadiums and shoe tech. So much is made about the technology of tennis rackets. But don't ...

A wise man once said a world without string is chaos; and there is definitely no string shortage in Lake Nebagamon, Wisconsin. This is due to the efforts of James Frank Kotera, or JFK as he liked to ...

Deciphering a word written on a ball of string that then unravelled depends on the randomness of the rolling process, says one New Scientist reader. But why not try it for yourself at home? I would ...