RALEIGH, North Carolina, April 16 (TNSjou) -- North Carolina State University issued the following news release: * * * How a New Technique Will Help Us Mine Rare-Earth Metals...With Plants Researchers have developed a technique for detecting and measuring the concentration of many rare-earth elements in plants, without destroying the plant. The technique can be used to optimize "plant mining" efforts, in which plants take up and concentrate these critical materials so that they can be harvest  more