NEW YORK — Water, Water, everywhere; nor any drop to drink. The plight of the Ancient Mariner is about to be alleviated thanks to a firm of eco-inventors from Canada who claim to have found the solution to the world’s worsening water shortages by drawing the liquid of life from an unlimited and untapped source – the air. The company, Element Four, has developed a machine that it hopes will become the first mainstream household appliance to have been invented since the microwave. Their creation, the WaterMill, uses the electricity of about three light bulbs to condense moisture from the air and purify it into clean drinking water. The machine went on display this weekend in the Flatiron district of Manhattan, hosted by Wired magazine at its annual showcase of the latest gizmos its editors believe could change the world. From the outside, the mill looks like a giant golf ball that has been chopped in half: it is about 3ft in diameter, made of white plastic, and is attached to the wall. It works by drawing air through filters to remove dust and particles, then cooling it to just below the temperature at which dew forms. […]