ScienceDaily: Cast away on a desert island, surviving on what nature alone can provide, praying for rescue but fearing the sight of a boat on the horizon. These are the imaginative creations of Daniel Defoe in his famous novel Robinson Crusoe. Yet the story is believed to be based on the real-life experience of sailor Alexander Selkirk, marooned in 1704 on a small tropical island in the Pacific for more than four years, and now archaeological evidence has been found to support contemporary records of his existence on the island.

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