ARGONNE, Illinois, July 7 -- The U.S. Department of Energy's Argonne National Laboratory issued the following news release: * * * Argonne researchers develop new membrane technology to extract lithium from water * Lithium, the lightest metal on the periodic table, plays a pivotal role in modern life. Its low weight and high energy density make it ideal for electric vehicles, cellphones, laptops and military technologies where every ounce counts. As demand for lithium skyrockets, concerns abo more PR