How a Light Bulb Works http://home.howstuffworks.com/light-bulb.htm
How Electricity Works http://science.howstuffworks.com/electricity.htm
How Magnets Work http://www.howstuffworks.com/magnet.htm
How Electromagnets Work http://www.howstuffworks.com/electromagnet.htm
The Science of Nondestructive Testing - there are links here to information about electricity and magnetism (as well as x rays and sound) http://www.ndt-ed.org/EducationResources/HighSchool/highschool.htm
Physics4kids: Electricity and Magnetism http://www.physics4kids.com/files/elec_intro.html
School for Champions: Electric Charges There are links to information about static electricity, magnetism and electromagnetism on the right (under "Also See") http://www.schoolforchampions.com/science/electrical_charges.htm
HyperPhysics Concepts: Electricity and Magnetism http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html
PhET Simulations: Electricity and Magnetism http://phet.colorado.edu/en/simulations/category/physics/electricity-magnets-and-circuits
Tech Topics: Electricity http://www.thetech.org/exhibits/online/topics/10a.html
US Energy Information Administration: The Science of Electricity http://www.eia.gov/energyexplained/index.cfm?page=electricity_science
How a Fuel Cell Works from PBS http://www.pbs.org/wgbh/nova/tech/fuel-cell-work.html
A Basic Overview of Fuel Cell Technology from the Smithsonian http://americanhistory.si.edu/fuelcells/basics.htm
Fuel Cell Animation from the US Department of Energy Fuel Cell Technologies Program http://www1.eere.energy.gov/hydrogenandfuelcells/fuelcell_animation.html
Fuel Cell Animation from the National Fuel Cell Research Center at the University of California, Irvine Click on Reactants, Products and Process to see the animation. You will need to click next as well as the individual reactants and products for more information. http://www.nfcrc.uci.edu/2/FUEL_CELL_INFORMATION/FCexplained/FC_animation.aspx#
USGS National Geomagnetism Program Frequently Asked Questions http://geomag.usgs.gov/faqs.php