the thorium dream

Video - Motherboard's 30-minute film on the grassroots movement to make thorium nuclear power a reality.

Motherboard | If the year is 2011, you are likely watching the above video on a Mac OS computer or a Windows computer. Those two obvious possibilities represent only the tail end of many not-so-obvious choices, the ones that determine, for better or worse, the direction that technology takes. Some things win and other things lose; some operating systems succeed, building on previous ideas, and others end up in the trash can of history. Or, in the case of Windows (which Apple once claimed “stole” the idea from Mac OS), the Recycle Bin. The trash is where Xerox’s Alto operating system ended up after inspiring both Steve Jobs and Bill Gates to develop their own graphical user interface, the front-end of computers that we now take for granted.

There’s much to take for granted in the evolution of technology, or at least in the way that technology appears to us today – refined, perfected, ever cutting-edge. In the case of energy, where innovation has never been more sorely wanted, what we take for granted are a set of circumstances that are both entrenched and terrible. Coal and oil and natural gas seem like the only sure-fire ways of providing base-load energy, if your only criteria is cheap electricity. Globally, if they don’t look paltry, our energy and resource supplies are becoming increasingly costly to extract and use. Demand has never been higher; ditto levels of CO2 and other terrible greenhouse gases in the atmosphere. Nuclear energy is powerful, but it’s even worse than the others, given persistent waste storage issues (these really need to end) and the threat of proliferation.

So fixed do these set of circumstances sound that when the topic of thorium comes up at a party in a webpage comment string, it elicits either a yawning eyeroll or an eye’s glint of hope.

In our case, it was the latter. While the idea of building small, thorium-based nuclear reactors – thought to be dramatically safer, cheaper, cleaner and terror-proof than our current catalog of reactors – can be shooed away as fringe by some, the germ of the idea began in the U.S. government’s major atomic lab, at Oak Ridge, Tennessee, in the 1960s, only to be left by the wayside as the American nuclear industry plowed ahead with its development of the light water reactors and the uranium fuel cycle. It’s only in the past half-decade that the idea has picked up steam again on the Internet, thanks to enterprising enthusiasts who have chronicled the early experiments, distributed documents, and posted YouTube videos. But if thorium’s second life on the Internet has grown the flock of adherents exponentially, it’s also pulled in more than a few people whose nuclear expertise doesn’t extend far past Wikipedia, adding a sheen of hype to the proceedings.

Still, the idea has legs, if new research programs by India and China are any indication. The former has just announced a prototype thorium-based advanced heavy water reactor, while the latter is researching a liquid fuel reactor based on the 1960s design. In the U.S., the race is being advanced not by the government but by some of the central movers and shakers of the Internet movement.

One of them, Kirk Sorensen, left his engineering job to study nuclear physics and start a company devoted to building small, modular liquid fluoride thorium reactors. The goal now may be to build some for the military, a tactic that would circumvent many of the challenges of building commercial reactors in the U.S. We met Kirk at the Thorium Energy Alliance summit in Washington, as well as an Army colonel focused on energy, and the head of the alliance, the thorium advocate and industrial engineer John Kutsch. We also interviewed Alexis Madrigal, senior editor at the Atlantic and author of Powering the Dream, a history of green technology evangelism, David Biello, associate editor at Scientific American, and Phillip Musegaas, the director of Riverkeeper’s Hudson River Program, which keeps careful tabs on the Indian Point Power Station, one of the country’s many aging nuclear plants, located about 30 miles from New York City. The nuclear physicist Alvin Weinberg, who led the first thorium reactor experiment, makes a cameo as well. Fist tap Dale.