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Economic Growth! Energy independence! Climate Change! There are countless arguments for moving beyond fossil fuels, for world energy needs. Unfortunately, many hurdles must be overcome before we can feasibly count on other sources of energy to replace coal, oil and possibly natural gas, which all together provide the lion’s share of the world’s electricity generation and transportation fuels. Even if there were no greenhouse effect, all of the fossil fuels we rely on will probably be depleted within a few hundred years. If humankind is going to have a future on this planet, at least a high-technology future, it is absolutely inevitable that we’ll have to find an alternate energy pathway.