Military tool helps make classier wines. Ground radar gadget tested in California wine country

<p>Scientist Susan Hubbard uses ground penetrating radar to determine moisture in vineyard soil.</p><p>Ground penetrating radar (GPR) is commonly used by the military. Instead of the geomagnetic waves being recorded and analyzed to detect moisture, GPR systems can be mounted in airplanes or helicopters to seek out buried weapons, equipment, bodies or mass graves. It has other uses in industrial and construction projects.</p>

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