A friend of mine recently pointed out that the real problem with energy is not its creation. Wind and solar are great, but on windless or cloudy days, we're up a creek without a paddle. And then there are source of energy everywhere, from treadmills to lightening. The problem is partially collection, but mostly storage.
We use fuels because they're easy to transport and relatively efficient. The problem is usually that use have to burn them to get the energy. This article talks about the related problem of storing hydrogen as a fuel, and a possible solution. It's not so nice to the chickens, but it may prove to be useful.
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