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Rock’s power to mop up carbon revisited

Last week, a group of geoengineers met in Hamburg to discuss what on the face of it sounds like a very attractive idea: to soak up anthropogenic carbon emissions using only rocks and water. In particular, they want to help to mitigate climate change by crushing rocks and dropping them into the sea or spreading them on land. The meeting was hailed a success, but the idea is still far from fruition.   Reprinted by permission from Macmillan Publishers Ltd: Nature News, Vol 505, pp 464, copyright 2014. For the complete article, please visit: http://www.nature.com/news/rock-s-power-to-mop-up-carbon-revisited-1.14560