In 1898, HG Wells story “The War of the Worlds” was published in book form. It was one of the first novels to depict a conflict between humans and alien invaders. The story, and it's adaptation to a radio drama by Orson Welles in 1938 left a huge impact on the world's imagination. In it, (SPOILER ALERT) the aliens are not defeated by military might or strategy, but by the common cold.
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