Another Age of Exploration

French scientists studying the genetic lineage of sweet potatoes in the islands of the South Pacific have found evidence that the food was introduced first from Peru, probably by Polynesian adventurers/explorers. [ScienceNOW]. Previously it was thought that the sweet potatoe was introduced twice, once from Mexico by Spaniards and once from the Caribbean by Portugese, but this new theory suggests another introduction several hundred years earlier.

I’m slowly being persuaded that people have been voyaging by boat for far longer than we think, and that rising sea levels have washed away physical evidence of the travels.

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