Links:

• http://fuelcells.si.edu/basics.htm (at the Smithsonian Institution)
• http://science.howstuffworks.com/fuel-cell.htm
• http://education.lanl.gov/resources/fuelcells/ (at Los Alamos Nat'l Lab)
• http://www.voltaicpower.com/Biographies/GroveBio.htm
• http://www.eere.energy.gov/hydrogenandfuelcells/ (from the US DOE)