Big Ideas for a Greener World

Alternative energy companies are vying for investor dollars with some audacious approaches to providing cheap, clean energy

Jim Heathcote says his company can one day make crude oil irrelevant. Britain-based ITM Power, of which Heathcote serves as chief executive, is promoting a low-cost way of splitting water molecules, leaving hydrogen as a cheap fuel. "Our scientists agree that it's the greatest scientific advancement since the beginning of the Industrial Revolution," he says, without a trace of irony or bluster.

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