The city was saturated in scientists; many had an astonishing breadth of talents. The Minister of Finance just before the upheaval did research on crystals and the spread of animal disease. After it, Paris's first mayor was an astronomer, the general who fought off invaders was a mathematician while Marat, a major figure in the Terror, saw himself as a leading physicist. Paris in the century around 1789 saw the first lightning conductor, the first flight, the first estimate of the speed of light and the invention of the tin can and the stethoscope. The theory of evolution came into being.

Perhaps the greatest Revolutionary scientist of all, Antoine Lavoisier, founded modern chemistry and physiology, transformed French farming, and much improved gunpowder manufacture. His political activities brought him a fortune, but in the end led to his execution. The judge who sentenced him--and many other researchers-- to death claimed that "the Revolution has no need for geniuses." In this enthralling and dazzling book, acclaimed science writer Steve Jones shows how wrong this was and takes a new look at Paris, its history, and its science, to give the reader dazzling new insight into the City of Light.