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An inexpensive catalyst generates hydrogen

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11:46am, July 15, 2003

When it comes to cleanliness, fossil fuels can't compete with hydrogen gas, which produces only water when it burns. But getting the hydrogen in the first place isn't so clean. Unless energy researchers overcome several stumbling blocks–such as the typical use of fossil fuels to generate the gas–the world's autos won't be filling up on truly clean hydrogen anytime soon.

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