For decades, we've been promised that a hydrogen economy is just around the corner: a high-tech Eden in which our cars, homes, and industries would be powered not by fossil fuels but by hydrogen from pollution-free sources. After billions in investment, hydrogen has failed to live up to these overblown promises. Yet it is as hyped as ever, a target of media enthusiasm and hefty investment from government and industry. Is it time to accept that the...
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