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Super Grass Spreads Beyond Its Oregon Test Plot

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Super Grass Spreads Beyond Its Oregon Test Plot

Super Grass Spreads Beyond Its Oregon Test Plot

Super Grass Spreads Beyond Its Oregon Test Plot

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A new genetically modified strain of grass has proved to be resistant to a reliable weed killer. Now the plant has spread beyond its test plot in central Oregon, and scientists and environmentalists are concerned about the possibility of "superweeds."

Ann Dornfeld of member station KLCC reports.