Fallout: The sinister and prolonged after-effect of nuclear explosions: a drawing illustrating some characteristics of this haunting phenomenon.An illustration by special Illustrated London News artist G.H Davis, with the cooperation of the United Kingdom Atomic Energy Authority, showing the dangers of nuclear fall-out. Britain's first nuclear tests in May 1957 prompted fears about the long term effects of the explosions on human life. Possible dangers listed here include radio-active dust and particles in rain, and the contamination of fish stocks.