While we're on the environment, and on a slightly cheerier note, I was at the barber's shop today and read an article in the New Scientist that was pretty bloody fascinating.
If the amazing scientists at The Oak Ridge National Laboratory are on the right track, the fuel of the future won't be hydrogen or some biofuel, but a tank full of metal. Basically, you'll fill your tank with iron filings (nano sized iron filings) and whoosh... a fuel more powerful than gasoline.
If you're remotely interested, I rummaged around the net and found a copy of the article HERE...
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