Does the future of going green mean packing gravel into the tailpipe of your car? Maybe. MIT’s Technology Review reports that Columbia University researchers have discovered that magnesium rich rock formations know as peridotite absorb carbon dioxide out of the atmosphere. The rock reacts with carbon-dioxide to create calcium carbonate and magnesium carbonate. The researchers optimistically predict, “that the carbon-sequestration rate in rock formations in Oman could be increased to billions of tons a year–more than the carbon emissions in the United States from coal-burning power plants, which come to 1.5 billion tons per year.” The rock is also found in California and New Guinea. Researchers believe that fracturing and heating the rock would increase its ability to trap large amounts of CO2. Right now, the researchers are only looking at large-scale commercial applications. But who knows, the time may come when a peridotite filter might find its way under your car.
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