PITTSBURGH, Pennsylvania, Oct. 6 -- The U.S. Department of Energy's National Energy Technology Laboratory issued the following news: An NETL researcher who leads a multi-national laboratory effort to determine the viability, safety, and reliability of storing hydrogen in subsurface environments recently told an international audience of National Academy Committee on Earth Sciences that hydrogen's potential as a flexible fuel for many end users depends upon a reliable system of subsurface storag  more