Capacitors: What Good Are They? - Short description of a fundamental capacitor, and units used to measure capacitance. Illustrations of capacitors in electronic circuits, with animation. Green Car Congress: Holden (GM) and CSIRO Working on Next-Gen Supercaps - Australian groups partnering on components for electric vehicles. Maxwell Licenses Ultracapacitor Technology To Shanghai Group - to enhance reliability and efficiency of electric power infrastructure. UltraCapacitors and SuperCapacitors - Information on how an ultracapacitor works, manufacturers, uses, and links to news. Supercapacitor - Wikipedia entry includes picture, history, applications, Ragone plot, diagram, links, and current state. Ultracapacitors Challenge the Battery - article written by chair of group devoted to promoting ultracapacitor technology includes web addresses of makers. All About Circuits - Capacitors - An introduction to capacitors. Theory, pictures, links to other parts of a web-book of electrical theory. The Charge of the Ultra - Capacitors - Nanotechnology takes energy storage beyond batteries [IEEE Spectrum] The Dark Horse in the Race to Power Hybrid Cars - Are ultracapacitors the key to making hybrids king of the auto market? [Scientific American]