With a track record of zero, you would think the perpetual motion school of applied phyics would have shut down long ago. Not so. Today, there's a company in Dublin, Ireland, called Steorn, which claims to have developed a device, called Orbo, which violates, or at least effectively skirts around, the laws of thermodynamics. They say once the technology -- which allegedly exploits hitherto unknown properties of magnets to generate free energy from nothing, is refined -- it can be used to power cars, electronics, and just about anything that needs energy to make it run.

Recently Steorn announced it would unveil Orbo, at, of all places, a London art gallery on July 4. However, the demonstration was a failure, because Orbo failed to work. Steorn's official explanation sounds remarkably like the excuses offered by all fringe inventors after their machines fail to work in front of an audience: "We are experiencing some technical difficulties with the demo unit in London. Our initial assessment indicates that this is probably due to the intense heat from the camera lighting."