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This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?

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In southwestern Africa's Namib desert, the lack of rainfall keeps grass sparse.

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But in some areas, mysterious rings of grass with bare centers appear and thrive.

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Now scientists have discovered these so-called fairy circles are indeed created by wee little creatures--termites.

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The work is in the journal Science.

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Many organisms live in and around fairy circles, which range from one to 50 meters in diameter and persist for decades.

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But scientists found only one species consistently inhabiting even the youngest fairy circles.

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The sand termite Psammotermes allocerus is thus the most likely culprit behind the rings.

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How do termites make fairy circles?

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Living grass sucks up rainfall and loses the liquid to evaporation.

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When termites cluster together, feeding on and destroying vegetation, they leave a roughly circular bare patch that stores more water than the surrounding soil.

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The fairy circle thus acts as a water reservoir for the sand termites, the grasses around the edge and other thirsty organisms.

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So maybe we should start calling these rings "termite circles."

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Nah, sounds a bit wooden.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.

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