In the last days of 1907, the German novelist and exponent of glass architecture Paul Scheerbart embarked upon an attempt to invent a perpetual motion machine.

The deceptively simple task of making a mechanism which would turn forever has fascinated many famous men and physicists throughout the centuries. In fact, the

Nathan Coppedge has been hailed as one of the top three theorists of perpetual motion, the others being Isaac Newton and Albert Einstein. This is the long-await

A mechanical engineer recounts the efforts of scientists and inventors through the centuries to devise perpetual-motion machinery and shows ways in which their

Imprisoned for life aboard a zeppelin that floats high above a fantastic metropolis, greeting-card writer Harold Winslow pens his memoirs. His only companions a