Cheap Tabletop Fusion Reactor

For the same unit mass of fuel, a fusion power plant would produce 10 times more energy than a fission reactor, and because deuterium is contained in seawater, a fusion reactor's fuel supply would be virtually infinite. A cubic kilometer of seawater would contain enough heavy hydrogen to provide a thousand years' worth of power for the United States.

Tabletop fusion: check. Now, where's my skycar?

[ Link via Purdue University ]