... to the atmosphere every year,1 potentially altering the energy balance in the earth’s atmosphere. Furthermore, there is a complex, dynamic interplay among carbon levels in the atmosphere, the ... performance targets for storage, for example, gravimetric energy density targets of 6 wt% H2 for 2010 and 9 wt% H2 for 2015.7 Since these targets include the mass of system components, the ... issue to natural oil supply is the dependence of many nations, including the U.S., on imported oil for the bulk of their energy requirements and the impact this has on their national security. Historically,...