Capturing and storing greenhouse gases beneath the earth could allow climate change to be mitigated, but researchers still need to find a method that can both permanently and safely contain the gases. Now researchers at the Pacific Northwest National Laboratory (PNNL) believe that they may have found an option: they've begun injecting carbon dioxide (CO2) — one of the main gases involved in global warming — a half-mile underground into flows of basalt, a volcanic rock, to see if it will stay put. PNNL's researchers suggest that because basalt is porous, it'll be able to hold onto CO2 when it's inserted in a liquid form. According to Nature , the basalt should also initiate a chemical reaction that will ultimately turn the mixture into...
via The Verge - All Posts http://www.theverge.com/2013/7/29/4567398/reducing-co2-emissions-basalt-injection-pnnl
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