sciencehabit writes: Over the decades, 50 or more explanations have been offered for the fields of broad, meter-high mounds of soil found across the western United States and on every continent except Antarctica. The ideas have ranged from earthquakes to glaciers to UFOs. But now it seems that generation upon generation of gophers built the millions of mounds seen today. And it took a computer model programmed to act like the burrowing rodents to unearth the truth.
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