Quicker, easier way to make coal cleaner

Construction of new coal-fired power plants in the United States is in danger of coming to a standstill, partly due to the high cost of the requirement - whether existing or anticipated - to capture all emissions of carbon dioxide, an important greenhouse gas. But an MIT analysis suggests an intermediate step that could get construction moving again, allowing the nation to fend off growing electricity shortages using our most-abundant, least-expensive fuel while also reducing emissions...

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