Scientists discover that charcoal traps ammonia pollution

Cornell University scientists Rachel Hestrin and Johannes Lehmann, along with collaborators from Canada and Australia, have shown that charcoal can mop up large quantities of nitrogen from the air pollutant ammonia, resulting ...

A glance at coal and its role in climate change

Coal took center stage in the global warming debate on Monday as a high-profile coal industry event kicked off on the sidelines of a U.N. climate conference in Warsaw.

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