Ghost of a flea

According to a diagram, printed on a single sheet of white paper and affixed with tape to a dusty slab of office drywall, his vision looks like a medieval torture device: a metal ball surrounded on all sides by metal rods and bisected by two long cylinders. It's big but not immense -- maybe 10 times as tall as the little robot man in the lower right corner of the page who's there to indicate scale.

What Laberge has set out to build in this office park, using $2 million in private funding and a skeletal workforce, is a nuclear-fusion power plant. The idea seems nuts but is actually, he says, not at all far-fetched. Yes, he'll admit, fusion is generally considered the kind of nearly impossible challenge undertaken only by huge universities or governments. Yes, fusion has a stigma to overcome; the image that it is fundamentally bogus, always and forever 20 years away, certainly doesn't help. Laberge would probably even admit that the idea of some Canadians working in a glorified garage conquering one of the most ambitious problems in physics sounds absurd.

But he will also tell you that his twist on a method known as magnetized target fusion, or MTF -- to wildly oversimplify, a process in which plasma (ionized gas) trapped by a magnetic field is rapidly compressed to create fusion -- will, in fact, work because it is relatively cheap and scalable. Give his team six to 10 years and a few hundred million dollars, he says, and his company, General Fusion, will give you a nuclear-fusion power plant.