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Locust Upset: DNA puts swarmer's origin in Africa

The desert locust, often blamed for modern crop ruin and biblical plagues, was not an ancient export from the Americas, say DNA analysts.

Some biologists had recently argued that Africa's storied locust arose from ancestors of today's New World Schistocerca species that crossed the Atlantic Ocean. That's backwards, Nathan R. Lovejoy of the University of Toronto at Scarborough now says.

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