Scientists turn chief global warming gas into harmless stone
Scientists have a found a quick way — but not a cheap one — to turn heat-trapping carbon dioxide gas into harmless rock.
Experts say the results of a two-year, $10 million experiment called CarbFix , conducted about one-third of a mile (540 meters) deep in the rocks of Iceland, offer new hope for an effective weapon to help fight man-made global warming.
When an international team of scientists pumped a carbon dioxide and water mix into underground basalt rocks, basic chemistry took over. The acidic mixture dissolved the rocks' calcium magnesium and formed limestone, a permanent natural jail for the heat-trapping gas, according to Juerg Matter of the University of Southampton in England. He is the lead author of a study detailing the experiment published Thursday in the jo...
